Physics' Concept - 6
Consider two balls A,B . Assume that B is at rest and A is moving towards B . Eventually , after sometime , A collides with B and at this instant A stops and B starts moving with some velocity.Taking this scenario into consideration , what can you say about the statement below :
"After collision , since A stops completely , by law of conservation of energy , the total energy lost by A is now completely gained by B which makes it move."
Note: This is a non-elastic collision.
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We cannot say that the energy is "completely" transfered to B. Some part of this energy is given to B and some of it is released as "heat" in the environment. Hence the statement is false.