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A disc of mass 0.5kg is kept floating ho...

A disc of mass 0.5kg is kept floating horizontally in mid air by firing bullets of mass 5 g each, vertically at it at the rate of 10 per second. If the bullets drop dead. The speed of the bullet striking the disc is (g=10 `ms^(-2)`)

A

`100 ms^(-1)`

B

`10 ms^(-1)`

C

`10 cm//s`

D

`1 cm//s`

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The correct Answer is:
C
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