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A disc of mass 5 kg is kept floating ho...

A disc of mass 5 kg is kept floating horizontally in mid air by firing 10 bullets per second vertically up. If the mass of each bullet is 50 gm and bullets rebound with same speed, the speed of each bullet is, (g = `10 ms^(-2)`)

A

`100 ms^(-1)`

B

`200 ms^(-1)`

C

`50 ms^(-1)`

D

`10 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The machine gun fires 240 bullets //min . If the mass of each bullet is 10 g and the velocity of the bullet is 600 ms^(-1) , the power (in kW) of the gun is

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