Editor Staff asked 1 year ago
When e < 1, the kinetic energy in the collision is ____
(a) Lost
(b) Gained
(c) Gained exponentially
(d) Unchanged
The 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
Select the correct answer from above options
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Editor Staff answered 1 year ago
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.
