A body of mass 5 kg moving with velocity 2 m/s collides with a stationary body of mass 3 kg and sticks to it. Combined velocity is MCQ with Answer and Explanation

Question

A body of mass 5 kg moving with velocity 2 m/s collides with a stationary body of mass 3 kg and sticks to it. Combined velocity is

A. 0.8 m/s

B. 2 m/s

C. 5 m/s

D. 1.25 m/s

Answer: Option D

Solution (By JKSSB Mock Tests)

Momentum before = 5×2=10, after = (5+3)v => v=10/8=1.25 m/s.

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