Respected tutors! I asked a question some time ago.My goal of asking question ,even after myself being a tutor, is to get clear with not so intuitive concepts, which i find intriguing. Q.What is the change in kinetic energy(ies) of body(ies) after collision of 2 moving bodies; you can take inelastic or elastic collision. 1- Remains same 2-Decreases 3-increases 4-any other possibilty All answers with 'decrease' options are correct, either elastic or inelastic collision. you can take any example and check. Q.Just think can KE be zero after collision? - this time its a bit more intuitive. Thanks.

(1) Energy is a conserved quantity. In the case of an elastic collision, energy exchange takes place only between the two bodies (as mentioned) colliding. Therefore the total kinetic energy of the two bodies remain same both before and after an elastic collision. (2) In the case of inelastic collision also, there is no violation of conservation of energy. However, apart from the energy exchange taking place between the bodies colliding, there is exchange of heat between other objects or some energy is dissipated as heat and sound produced. (3) It is not clear from your questions as to whether you are referring to the total kinetic energy of the two particles or to the kinetic energy of a single body involved in the process. So, forward the question after re framing it. read less

Elastic is the case means the kinetic energy remains same.but most of the collisions that we observe in our daily life is inelastic one where a part of energy will defenitely be converted into some other form of energy like heat,light etc..(figure an accident).if it is the case of a perfectly inelastic collision then the bodies stick together and move. hope it helped you read less