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Question: Answered & Verified by Expert
A shell of mass 10 kg is moving with a velocity of 10 ms-1 when it blasts and forms two parts of mass 9 kg and 1 kg respectively. If the 1st mass is stationary, the velocity of the 2nd is
PhysicsLaws of MotionNEET
Options:
  • A 1 ms-1
  • B 10 ms-1
  • C 100 ms-1
  • D 1000 ms-1
Solution:
2576 Upvotes Verified Answer
The correct answer is: 100 ms-1
Given that, 

v1=10 ms-1;  m1=10 kg

v2=0; m2=9 kg

v3=v;  m3=1 kg

According to conservation of momentum

m1v1=m2v2+m3v3

10×10=9×0+1×vv=100 ms-1

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