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A shell in flight explodes into n equal ...

A shell in flight explodes into `n` equal fragments `k` of the fragments reach the ground earlier than the other fragments. The acceleration of their centre of mass subsequently will be

A

`g`

B

`(n-k)g`

C

`((n-k)g)/k`

D

`((n-k))/ng`

Text Solution

Verified by Experts

The correct Answer is:
D
`a_(cm)=(summ_(i)a_(i))/(summ_(i))`
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