Published by:
CGP EDU Academic Team
Published on: September 11, 2026
A particle of mass 
with an initial velocity ui collides perfectly elastically with a mass 3m at rest. It moves with a velocity 
after collision, then, v is given by
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
JEE Main 2020
Conservation of linear momentum
for elastic collision
Eliminating 
gives
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