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A bullet of mass 0.05 kg moving with vel...

A bullet of mass 0.05 kg moving with velocity 400 m/s gets embedded after collision with a block of mass 3.95 kg placed on a smooth horizontal platform as shown in the figure. If height of the platform from the ground is 20 m and block strikes the ground at B, then the value of AB is

A

5m

B

20m

C

15m

D

10m

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