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When e < 1, the kinetic energy in the collision is ____(a) Lost(b) Gained(c) Gained exponentially(d) UnchangedThe question was posed to me in a national level competition.This question is from Collision in division Work, Energy and Power of Physics – Class 11

Answer»

The CORRECT option is (a) Lost

Easiest explanation: Coefficient of restitution or e can be UNDERSTOOD as the measure of how much KINETIC energy is REMAINING after the collision. As e becomes lesser and lesser, more kinetic energy is lost in the collision. This can be easily understood with by deriving the coefficient of restitution in a completely elastic collision.



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