Question

6. A bullet of mass 20 g moving with a velocity of 400 ms enter a
freely suspended wooderblock of mass 200 gm Calculate the
velocity of block.​

Answer 1

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Here,

V center of mass =0

M1V1 = M2V2

★ Net forward momentum = net backward momentum

● Mass is added because bullet enters in barrel.

=>mv = (M+m)V

=>20×400 = (200+20)× V

=> V = 800/220

=> V = 40/11m/s

Happy to help!

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