Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A body of mass 1 kg collides head on elastically with a stationary body of mass 3 kg. After collision, the smaller body reverses its direction of motion and moves with a speed of 2m/s. The initial speed of the smaller body before collision is _______ms -1 .
Text Solution
Verified by ExpertsThe correct answer is:
4
(4)

......
......
Solving and
u 1 = 4 m/s
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