JEE Main 2019PhysicsCenter of Mass Momentum and CollisionEasyMCQ

JEE Main 2019 — Center of Mass Momentum and Collision Question with Solution

JEE Main 2019 (09 Apr Shift 2)

Question

A particle of mass m is moving with speed 2v and collides with a mass 2m moving with speed v in the same direction. After the collision, the first mass is stopped completely while the second one splits into two particles each of mass m, which move at an angle 45o with respect to the original direction. The speed of each of the moving particle will be

Choose an option

Show full solutionCorrect option: C
Correct answer
C22v

Step-by-step explanation



As 2m splits into equal parts, v1=v2 and θ=450
From conservation of linear momentum,
m2v+2mv=2mv1cos⁡45o
⇒v1=v2=22v

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About this question

This is a previous-year question from JEE Main 2019, 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.