Question

A 2 kg body moving with a velocity of 4 m/s gets stuck up to another body with velocity 3 ms moving in the same direction. If the velocity of the combination is 3.5 m/s, find the mass of the second body.
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Answer 1

Answer:

Explanation:this question can be solved by visualising the conservation of momentum. ..condition is :no external force to the system..

So..P (i)=P (f)

M1V1 +M2V2=(M1 +M2)×Vcom.

2×4 +M2×4=(2+M2)×3

8 + 4M2 =6M2

So M2 =4Kg....