JEE Main 2022PhysicsCenter of Mass Momentum and CollisionEasyNumerical

JEE Main 2022 — Center of Mass Momentum and Collision Question with Solution

JEE Main 2022 (28 Jun Shift 1)

Question

A man of 60 kg is running on the road and suddenly jumps into a stationary trolly car of mass 120 kg. Then the trolly car starts moving with velocity 2 m s-1. The velocity of the running man was _____ m s-1, when he jumps into the car.

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Show full solutionCorrect answer: 6
Correct answer
6

Step-by-step explanation

Applying conservation of the momentum,

mmu=mm+mtv⇒60u=60+120×2⇒u=6 m s-1

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About this question

This is a previous-year question from JEE Main 2022, 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.