JEE Main 2023PhysicsCenter of Mass Momentum and CollisionEasyNumerical

JEE Main 2023 — Center of Mass Momentum and Collision Question with Solution

JEE Main 2023 (31 Jan Shift 2)

Question

A ball is dropped from a height of 20 m. If the coefficient of restitution for the collision between ball and floor is 0.5, after hitting the floor, the ball rebounds to a height of ______ m.

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Show full solutionCorrect answer: 5
Correct answer
5

Step-by-step explanation

As we know h'=e2h, where h'=height after the collision, h=height before the collision and e=coefficient of restitution.

Therefore,

h'=0.52×20 m=5 m

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About this question

This is a previous-year question from JEE Main 2023, covering the Center of Mass Momentum and Collision chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.