Elastic collision vs inelastic collision formula. it is the same before and after the collision).

Elastic collision vs inelastic collision formula. An example of an inelastic collision: A collision of two cars Conclusion: A collision results from friction between two objects that are touching each other. This lack of conservation means that the forces between colliding objects may remove or add internal kinetic energy. It also provides exam tips for the AP Physics 1 Learn about Elastic, Inelastic and Perfectly Inelastic collisions via a demonstration In reality, very few collisions are perfectly elastic or perfectly inelastic collisions where all possible kinetic energy is lost. If the total momentum and the total kinetic energy of a system are conserved Explore the concept of collisions in physics, including definitions, types (elastic and inelastic), and practical examples. inelastic collision equations, and work through examples of Jul 23, 2025 · Types of Inelastic Collision There are 2 types of inelastic collision: Perfectly Inelastic Collision Partially Inelastic Collisions Perfectly Inelastic Collision A perfectly inelastic collision is a type of inelastic collision where two objects stick together after the collision and move as a single object. Explore energy conservation, velocity changes, and perfectly inelastic collisions. Elastic and Inelastic Collisions When objects collide, they can either stick together or bounce off one another, remaining separate. These classifications hinge on how momentum and kinetic energy behave during an interaction. Aug 17, 2025 · Types of Collisions Explained Understanding the different types of collisions is crucial in physics and engineering fields. Both momentum and kinetic energy are conserved quantities in elastic collisions. 2-D Collisions Sep 30, 2023 · What is inelastic collision & what happens during it. For an elastic collision, the only way for both momentum and kinetic energy to be the same before and after the collision is either the objects have the same velocity (a miss) or to reverse the direction of the velocities as shown in Figure 15. Elastic collisions should conserve momentum as well as kinetic energy. Momentum is not conserved nearly as well as in elastic collisions. These collisions describe how objects interact and transfer momentum and energy when they collide. For elastic collision, . Discover the inelastic collision formula, its significance in momentum conservation, and real-world examples like car crashes and sports impacts. This means they have the same final velocity. The former sort of collision (where kinetic energy is conserved) we call elastic, and the second type of collision we call inelastic. Dec 24, 2024 · Learn about elastic and inelastic collisions for your CIE A Level Physics course. Q. Elastic collisions tend to occur with hard and stiff objects e. Inelastic collision: “new” particles in the final state, e. Nov 29, 2024 · Today, we will have a look at What is Collision? We will discuss both Elastic and Inelastic Collisions and their mathematical representation in detail. Understand the dynamics of how objects interact and transfer energy during collisions. The Khan Academy videos referenced in this section show examples of elastic and inelastic collisions in one dimension. Learning Objectives Identify the type of collision Correctly label a collision as elastic or inelastic Use kinetic energy along with momentum and impulse to analyze a collision Elastic and inelastic collisions have nothing to do with the momentum stuff we’ve been doing! It is still valid to continue talking about collisions since we’ve just spent so much time looking at 1D and 2D collisions. In elastic collisions, the total kinetic energy of the objects remains the same before and after the collision. From our discussion in Section 4. An inelastic collision is a collision in which both bodies stick together and move together after the collision. In an inelastic collision, the total final kinetic energy of the system is less than the total initial kinetic energy of the system because some of the energy is dissipated as other forms of energy. simbucket. This physics video provides a basic introduction into elastic collisions. What is the formula for calculating the loss of kinetic energy in an inelastic collision? The loss of kinetic energy in an inelastic collision can be calculated using the formula: Loss of Kinetic Energy = Initial Kinetic Energy (KEi) - Final Kinetic Energy (KEf). inelastic collision. Nov 21, 2023 · An inelastic collision is a collision in which heat is generated and the objects involved experience some form of damage. Apr 6, 2023 · An elastic collision is a collision between two objects in which the momentum and kinetic energy are conserved. Then, create an inelastic collision by setting the slider “locking” and see what happens to the exchange of momentum and energy in the collision. For inelastic collision, . This fundamental 9. Internal kinetic energy is the sum of the kinetic energies of the objects in the system. This behavior is often observed in situations where the objects are made of a sticky material or when the collision occurs at low speeds. While there are situations when some kinetic energy gets converted into heat, deformation of shape etc. Perfectly Inelastic Collision In contrast to perfectly elastic collisions, perfectly inelastic collisions involve a loss of kinetic energy. In an elastic collision, the objects separate after impact and don’t lose any of their kinetic energy. Nov 27, 2024 · Introduction In physics, collisions are categorized into two main types: elastic and inelastic collisions. In a perfectly inelastic collision, the objects stick together and Apr 21, 2025 · The Main Idea While the term "elastic" may evoke rubber bands or bubble gum, in physics it specifically refers to collisions that conserve internal energy and kinetic energy. An elastic collision is a collision between two or more bodies in which the total kinetic energy of the bodies before the collision is equal to the total kinetic energy of the bodies after the collision. In contrast We have seen that in an elastic collision, internal kinetic energy is conserved. Both types of collisions conserve momentum, but only elastic collisions conserve kinetic energy. 4, it's clear that what determines the inelasticity of a collision is the deformation of the colliding objects. After the collision, ball 1 comes to a complete stop. Learn the differences between inelastic and elastic collisions in this engaging video lesson. That is, the net momentum vector of the bodies just after the collision is the same as it was just before the collision, Q. Elastic collision is a type of collision in which the total kinetic energy of the objects remains constant, i. These theoretical collisions are seldom observed in the natural world due to inherent energy losses, like sound and heat, in most real-life collisions. ∴ only one equation to solve: pinitial = pfinal Sep 27, 2024 · Learn about elastic vs inelastic collisions for your AP Physics 1 exam. Maximum kinetic energy is lost during the occurrence of such kind of collision. Explore momentum and energy conservation across different collision types. plasticine balls. Just like in all collisions, however, total momentum is still the same before and after the collision: We will discuss inelastic collisions, perfectly inelastic collisions, their formula, and inelastic collision in two dimensions in this article. There are two types of collisions, namely: Elastic Collision An elastic collision is one where there is no net loss in kinetic energy in the system due to the collision. Explore real-life examples of each concept in physics, followed by a quiz We start with the elastic collision of two objects moving along the same line—a one-dimensional problem. In a perfectly inelastic collision, the colliding objects stick together and move as a single unit after the collision. Elastic and Inelastic Collisions Collisions happen when two objects come into contact with each other, usually moving in different directions or at different speeds. An inelastic collision is one in which the internal kinetic energy chan Dec 24, 2024 · Revision notes on Elastic & Inelastic Collisions for the Cambridge (CIE) AS Physics syllabus, written by the Physics experts at Save My Exams. Elastic and inelastic collisions are fundamental concepts in physics, particularly within the study of linear momentum. Explore the fundamentals of elastic and inelastic collisions in one and two dimensions. the collision can be of two types that includes, Elastic Collision and Inelastic Collision. Elastic collisions are those for which the total mechanical energy of the system is conserved during the collision (i. An elastic collision is one that conserves kinetic energy. What is Collision? A collision is an event where a strong force acts for a very short period between two or more bodies. Elastic and Inelastic Collisions For all collisions in a closed system, momentum is conserved. docx from PRGM 100 at Barton Community College. g. The before- and after-collision velocities and momentum are shown in the data tables. Question: Two billiard balls collide. Collisions and Momentum in Physics Conservation of Momentum of Systems When two objects A and B collide, the collision can be either (1) elastic or (2) inelastic. A collision in physics is an event where two or more bodies come into contact and exert forces on each other for a brief period, causing changes in momentum and energy. Elastic and Inelastic Collisions In a totally inelastic collision, two particles with masses and collide head-on and stick together after the collision. At any instant, half the collisions are, to a varying extent, inelastic collisions (the pair possesses less kinetic energy in their translational motions after the collision than before), and the other half could be described as "super-elastic" (possessing more kinetic energy after the collision than before). Inelastic Collision Between Two Particles General equations can be developed for the inelastic collision between two particles. Common in car crashes, billiards, sports, and microscopic particle interactions. Work done by internal forces may change the forms of energy within a system. In the last unit, our focus was on inelastic collisions, those collisions in which the kinetic energy of the system was not conserved. In the case of inelastic collision, momentum is conserved but the kinetic energy is not conserved. Understanding these types of collisions is essential for students preparing for the Collegeboard AP Physics 1: Algebra-Based exam. Kinetic energy is the energy of Jul 23, 2025 · Elastic Collision is the collision in which the kinetic energy of the system is conserved. … Jan 21, 2025 · Name: Gabriella Escobar and Damian Aguiniga Collisions:Elastic and inelastic collisions Driving Question | Objective How is the total linear momentum and kinetic energy of a two-object system affected by a collision? Experimentally demonstrate that linear momentum and kinetic energy are conserved in an elastic collision, and that linear momentum is conserved but kinetic energy is not conserved Jul 8, 2019 · The Main Idea There are two types of collisions: inelastic and elastic. Learn inelastic collision: definition, formula, solved examples, and key differences vs. In cases of completely inelastic collisions, the objects merge and move with a single, combined velocity afterward. 10 hours ago · View Lab #2 Elastic and Ineslastic Collisions PHYS 1604 (2). An inelastic collision is one in which the internal kinetic energy changes (it is not conserved). In most collisions, a fraction of the kinetic energy transforms into heat and sound. Boost your physics knowledge now. The key difference lies in the behavior of kinetic energy—elastic collisions conserve it, while inelastic collisions lose some energy as heat, sound, or deformation. Discover how to solve momentum conservation problems in one dimension. For example, if the objects collide and momentum and kinetic energy of the objects are conserved than we call this collision “elastic collision”. 6 illustrates an elastic collision in which internal kinetic energy and momentum are conserved. Also in this collision loss of kinetic Mar 6, 2025 · Explore elastic and inelastic collisions to understand how objects interact, exchange energy, and master key AP® Physics 1 concepts. Most of the collisions in daily life are inelastic in nature. This article delves into the intricacies of elastic and inelastic collisions, highlighting their significance, theoretical underpinnings, and Jun 20, 2025 · Learn about the difference between explosions and collisions for your IB Physics course. The above schematic diagram illustrates a perfectly inelastic collision. elastic collisions. In particular non-conservative work was done by the forces that the individual objects exerted on each other during the collision. For inelastic Elastic and Inelastic Collision Apart from the above two classification collisions can also be classified on the basis of whether kinetic energy remains constant or not. It explains how to solve one dimension elastic collision physics problems. . Perfectly inelastic collisions (objects sticking together) are also discussed. Oct 30, 2024 · In contrast, inelastic collisions are more common in real-world scenarios, where the objects may lose kinetic energy due to sound, heat, or other forms of energy dissipation. This is an inelastic collision. On the other hand, in inelastic collisions, some of the kinetic energy is transformed into other forms, such as heat, sound, or deformation of the objects. An inelastic collision is a collision in which heat is generated and the objects involved experience some form of damage. Momentum remains conserved and kinetic energy initial is always greater than the kinetic energy final for the whole system. 3 Inelastic collisions viewed in the CM frame Case of perfectly inelastic collision (e = 0) After collision, total mass (m1 + m2) is at rest in CM: In this video we learn how to define elastic and inelastic collisions, in which cases momentum and kinetic energy are conserved, and how to categorize a collision using the coefficient of restitution. In an inel Collisions Momentum is conserved in all collisions. Sep 27, 2024 · Learn about elastic vs inelastic collisions for your AP Physics 1 exam. The first possibility is that a single object may break apart into two or more pieces. *Comment with any questions or lesson requests* In this video, the difference between elastic and inelastic collisions are explained using momentum and energy concepts. In a perfectly inelastic collision, the objects stick together and Mar 6, 2023 · Introduction The difference between elastic and inelastic collision mainly depends upon the kinetic energy. Nov 19, 2024 · You will learn the different types of collisions including Elastic Collisions, Inelastic Collisions, Perfectly Inelastic Collisions, and Explosions. Master elastic vs inelastic collisions! Learn energy conservation, momentum, and real-world applications. Inelastic Collision Definition An inelastic collision is such a type of collision that takes place between two objects in which some energy is lost. Inelastic collisions are where two objects stick together An explosion is commonly to do with recoil For example, a gun recoiling after shooting a bullet or an unstable nucleus emitting an alpha particle and a daughter nucleus To find out whether a collision is elastic or inelastic, compare the kinetic Jan 25, 2023 · The** formula** for elastic collision is m1v1 + m2v2 = m1v1' + m2v2' where the formula for inelastic collision m1v1 + m2v2 = (m1 + m2)v'. For illustration purpose, let’s look at the “classic” head-on collision between two equal masses m with equal initial Jul 20, 2022 · Example 15. But the two events we just mentioned are totally different kinds of collisions! This is unlike an elastic collision where, at the point of impact, the particles deform elastically; meaning they behave like perfectly elastic springs, absorbing and releasing the same amount of energy during impact. This type of collision, characterized by the loss of kinetic energy while momentum is conserved, finds applications in everyday life, from car accidents to sports and industrial processes. 6. In an elastic collision, the total final kinetic energy of the system is equal to the total initial kinetic energy of the system. The way these objects collide determines how energy is transferred between them. This is a rare occurrence in real-life scenarios due to the influence of nonconservative forces like friction. it is the same before and after the collision). What is a Jun 20, 2025 · All collisions occurring on a macroscopic level are inelastic collisions However, exam questions can use the theoretical idea of an elastic collision on a macroscopic level A totally inelastic collision is a special case of an inelastic collision where the colliding bodies stick together and move as one body We distinguish between two types of collisions: elastic and inelastic collisions. Elastic collisions involve objects that bounce off each other without any loss of kinetic energy, while inelastic collisions involve objects that stick together or deform during the collision, resulting in a loss of kinetic energy. Elastic collisions are interactions between two or more objects where no kinetic energy is lost during the collision. The kinetic energy of the objects after the collision is less than the kinetic energy before the collision. Includes key formulas and step-by-step examples for AP & college students. Perfect for JEE, NEET, and board exam prep. Inelastic collisions tend to occur with soft and malleable objects e. An elastic collision is commonly defined as a collision in which linear momentum is conserved and kinetic energy is conserved. In order to determine momentum, the following equation (1) was used. 6 Two-dimensional elastic collision between particles of equal mass Show that the equal mass particles emerge from a two-dimensional elastic collision at right angles by making explicit use of the fact that momentum is a vector quantity. Let's discuss elastic and inelastic collisions with examples and formulas. Dec 9, 2023 · Learn the difference between elastic, inelastic, and perfectly inelastic collisions. Collisions can be either elastic or inelastic. This change in kinetic energy from initial to final states is what differentiates inelastic Unlike a perfectly inelastic collision, when we have a perfectly elastic collision in 2D, the colliding objects do not stick together after the collision. Key points: It involves momentum transfer and possible kinetic energy change. By reading the information given in the article, you will understand all about elastic and inelastic collisions. A collision is a short-duration, high-force interaction between two or more objects where their motion Elastic vs Inelastic Collision: Key Differences Explained Elastic collision is a fundamental concept in physics that explains what happens when two objects come into direct contact and exert forces on each other. Jul 12, 2020 · According to the Momentum Conservation Principle: For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal Learn physics collision equations, including elastic and inelastic collisions, momentum conservation, and energy transfer, to understand impact dynamics and motion principles. Find all the chapters under Middle School, High School and AP College Physics. Momentum is conserved regardless of whether or not kinetic energy is conserved. In fact, such a collision reduces internal kinetic energy to the minimum it can have while still conserving momentum. Learn a few examples, along with equations, problems, and diagrams. Sep 1, 2025 · Create an elastic collision by setting the slider to “bouncy” and observe if both the momentum and kinetic energy are conserved by analyzing the graphs. billiard balls. We also have an additional variable, as compared to the totally inelastic case, because in this case the objects do not stick together and thus get different end speeds. These types of collisions The Khan Academy videos referenced in this section show examples of elastic and inelastic collisions in one dimension. The collision is always elastic or inelastic. The animation below portrays the inelastic collision between a 1000-kg car and a 3000-kg truck. Yes, there are distinct types of collisions, primarily categorized into elastic, inelastic, and perfectly inelastic collisions. In the second setup the carts stuck together after the collision. Understand how to determine if a collision is elastic or inelastic. Inelastic Collisions Kinetic energy is not conserved during the collision (i. ☞ € no new particles are created in the collision ☞ satisfy the classical definition of an elastic collision: initial kinetic energy = final kinetic energy. If the kinetic energy of the system remains constant, then it is known as an elastic collision. We have seen that in an elastic collision, internal kinetic energy is conserved. Jan 1, 2023 · Well, it is determined by the type of material. Ball 1 moves with a velocity of 4 m/s, and ball 2 is at rest. It means that the total momentum and the total kinetic energy of the objects remain the same before and after the collision. When two objects come near each other, a force affects them for a short period, causing a change in their velocities, momentum, and energies An inelastic collision, in contrast to an elastic collision, is a collision in which kinetic energy is not conserved due to the action of internal friction. But generally, the total kinetic energy of the system is not conserved. e. It is the event in which two or more bodies exert forces on each other in about a relatively short time. Figure 8. An unknown velocity is Learn about Comparing Elastic and Inelastic Collisions from Physics. Learn how to solve elastic collision problems using a shortcut derivation method explained in this educational video. Understand the coefficient of restitution, the key differences between elastic and inelastic collisions, and review examples tailored for JEE examinations. In collisions of macroscopic bodies, some kinetic energy is turned into vibrational energy of the atoms, causing a heating effect, and the bodies are deformed. In an elastic collision, the total kinetic energy of the objects is conserved, while in an inelastic collision, some of the kinetic energy is lost. Jan 9, 2025 · Elastic collisions are those following which objects move away in opposite directions. Identify the type of collision Correctly label a collision as elastic or inelastic Use kinetic energy along with momentum and impulse to analyze a collision Jul 2, 2025 · Check out the complete information about the what is collision, types of collision, elastic collision, Inelastic collision, difference between elastic and inelastic collision, elastic collision examples and many more. If e = 1, refers to a perfectly elastic collision in which no kinetic energy is dissipated. This formula quantifies the energy dissipated during the collision. A collision in which the objects stick together is sometimes called a perfectly inelastic collision because it reduces internal kinetic energy more than does any other type of inelastic collision. … Mar 14, 2024 · Work And Energy – Elastic And Inelastic Collisions The total momentum of a system of interacting bodies remains constant in the absence of an external force. Interactions between molecules are examples of perfectly elastic collisions. , the sum of kinetic energies of the objects before and after the collision is the same. A collision occurs when two or more object comes in direct contact with each other. some KE converted to heat, or sound, or deformation). Worksheet of Conservation of Conservation of Linear Momentum Experiment by using PHET In reality, most collisions fall somewhere between the extremes of a completely elastic collision and a completely inelastic collision. An elastic collision is one that also conserves internal kinetic energy. Inelastic Collision An inelastic collision is a Jul 23, 2025 · For e = 0, refers to a perfectly inelastic collision. The combined particle will move with some common velocity . Introduction A collision occurs when two objects come in direct contact. In physics, we generally classify collisions into two main types: May 16, 2025 · A perfectly inelastic collision is one where the two objects that collide together become one object, losing the maximum amount of kinetic energy. Master elastic and inelastic collisions with clear examples. However, we can examine collisions under two titles if we consider conservation of energy. An inelastic collision does not conserve kinetic energy. The big identifying characteristics of inelastic collisions that distinguish them from elastic collisions is that in inelastic collisions, the momentum of the interacting bodies are conserved, but the kinetic energy is not. An example of this is a firecracker, or a bow and arrow, or a roc Nov 18, 2024 · Revision notes on Elastic & Inelastic Collisions for the Edexcel International A Level (IAL) Physics syllabus, written by the Physics experts at Save My Exams. In several problems, such as the collision between billiard balls, this is a good approximation. In an inelastic collision, some of the kinetic energy is lost and converted into other forms of energy, such as heat, sound, or deformation of the objects. elastic collision. In elastic collisions, total kinetic energy is conserved, meaning that the energy before and after the collision remains the same. Also, learn elastic vs. Inelastic Collisions In inelastic collision, there may be deformations of the object Aug 6, 2025 · They are classified into different types based on how energy is conserved or transformed, including elastic, inelastic, and perfectly inelastic collisions, but firstly, we will discuss the concept of collision. Discover the elastic vs. In a When you take a shot on a pool table or tackle someone in a football game, you're participating in a collision. For inelastic Elastic and Inelastic Collisions Inelastic Collision A collision is a directly physical interaction between two objects or bodies. If 0 < e < 1, refers to a real-world inelastic collision, that is, in these types of collision, some kinetic energy is lost. com/simulation/collision-carts-lab/094 - Elastic and Inelastic CollisionsIn this video Paul Andersen compares and <p>Elastic and inelastic collisions are two fundamental types of interactions between colliding bodies that are essential in physics. If kinetic energy before is the same as after, then the collision is elastic. Oct 12, 2024 · Explanation Calculation Example: In physics, a collision is an event in which two or more objects exert forces on each other for a relatively short time. If total kinetic energy is not conserved, then the collision is referred to as an inelastic collision. … Nov 2, 2023 · Conclusion In conclusion, an understanding of inelastic collision is crucial in the field of physics. : e-p → e-pπo e-p → e-Δ+ A basic and easy-to-understand overview of A-Level Physics, with a particular focus on elastic and inelastic collisions in the topic of momentum Feb 13, 2025 · Learn about elastic vs inelastic collision, kinetic energy conservation, and momentum transfer in physics, exploring types of collisions and their effects on objects, including perfectly elastic and inelastic collisions. From momentum conservation: Coefficient Of Restitution Coefficient of restitution is defined as: For a perfectly inelastic collision, e is 0. Feb 3, 2025 · The first setup was testing an elastic collision, in which the carts rebound off each other and go their separate ways. By utilizing the inelastic collision formula, we can calculate and predict the outcomes of such Nov 21, 2023 · Learn about final velocity in inelastic vs. Elastic and Inelastic Collisions Elastic Collisions Elastic collisions are idealised interactions where both momentum and kinetic energy are conserved. Table of contents No headers For a totally elastic collision, we can invoke both conservation of momentum and (by definition of a totally elastic collision) of kinetic energy. Can be elastic, inelastic, or perfectly inelastic. When both momentum and kinetic energy are conserved, the collision is called an elastic collision. Elastic and Inelastic Collisions Collisions: Elastic and Inelastic Although the momentum of individual objects may change during a collision, the total momentum of all the objects in an isolated system remains constant. Standard Collision Examples Review the key concepts and skills for inelastic collisions. In one-dimensional collisions, the incoming and outgoing velocities are all along the same line. Boost your physics grades-start learning now with Vedantu! Elastic and Inelastic Collisions Nov 21, 2023 · Learn what makes some collisions elastic and others inelastic. 🔥Subscribe: / @thephysicsuniverse 📺 Recommended playlists: Physics: • Physics AP Physics 1 Review This guide covers elastic and inelastic collisions. There is no loss in kinetic energy in the elastic collision, whereas the inelastic collision involves the loss of kinetic energy of the system. Notes on Elastic and Inelastic Collisions In any collision of 2 bodies, their net momentum is conserved. However kinetic energy is conserved in elastic collisions only. The guide uses examples and practice problems to illustrate momentum conservation in collisions and how to calculate final velocities. May 8, 2025 · Learn the difference between elastic & inelastic collisions in Physics 1. Examine the inelastic collision formula, and discover examples of how to find final Jul 17, 2014 · 5 (For the purpose of this question, "calculating a collision" means: given the velocities and masses of two objects in a collision, figuring out the new velocities of both objects after the collision). In some collisions in a closed system, kinetic energy is conserved. In this guide, we’ll Inelastic vs Elastic Collisions Inelastic collisions are mushy (like dough balls) Elastic collisions are bouncy (like rubber balls) In a perfectly Inelastic collision: the objects stick together and end up sharing a new velocity the objects get deformed by the collision, so Kinetic Energy is lost (it gets converted into heat, light and sound) An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. BUT Momentum is conserved during collision. What is the velocity of ball 2 after the collision? This physics video tutorial Explains how to solve inelastic collision problems in one dimension using the law of conservation of linear momentum. Almost all collisions are somewhere in between, and we can simply label them as inelastic, implying that some kinetic energy is lost due to the collision. It explains the differences between them, focusing on kinetic energy conservation. Momentum is conserved in all collisions when no external forces are acting. Simbucket simulation - http://www. In this section, we’ll cover these two different types of collisions, first in one dimension and then in two dimensions. In simple words, in an elastic collision, no loss of kinetic energy occurs whereas, in an inelastic collision, the loss of kinetic energy occurs. Jul 23, 2025 · Elastic collisions and inelastic collisions are two types of collisions that behave differently in physics. I know how to calculate a totally elastic collision, and how to calculate a totally inelastic collision. Perfectly elastic collisions are characterized by a coefficient of restitution of 1. ufk mbwclr tfujxw bfyq asankha bwbxw vhfle nlwtd vbtf tku