Question

Find the momentum of a bullet of mass 0.05 kg which does a work of 1000 joule on a wooden block when it hits the wooden block

Answer 1

Answer:

10 kgm/s..........

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Answer 2

Answer:

Explanation:

Applying work energy theorem,

Work done by bullet=Change in kinetic energy.

Assuming bullet comes to rest after hitting the block,

1000=(1/2)m({v^2}-0)

=> v=20m/s

So, momentum=mv=0.05*20=1 kgm/s