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A bullet of mass 0.01 kg travelling at a...

A bullet of mass 0.01 kg travelling at a speed of 500 m/s strikes a block of mass 2 kg, which is suspended by a string of length 5 m. The centre of gravity of the block is found to rise a vertical distance of 0.1 m. The speed of the bullet after it emerges from the block will be -

A

1.4m/s

B

110 m/s

C

220 m/s

D

14 m/s

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