Q.

A shot moving with a velocity 150ms−1  collides a wooden block and comes to rest in it. If mass of the block is 14 times the mass of the shot, velocity of the block is

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a

14ms−1

b

10ms−1

c

4ms−1

d

2.5ms−1

answer is B.

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Detailed Solution

m×150=(14m+m)v                 150m=15mv                 v=10m/s
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A shot moving with a velocity 150ms−1  collides a wooden block and comes to rest in it. If mass of the block is 14 times the mass of the shot, velocity of the block is