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A

`2U//v^(2)`

B

`2v//U^(2)`

C

`2v//U`

D

`U^(2)//2v`

Text Solution

Verified by Experts

The correct Answer is:
A
`U_(i)+0=U_(f)+1/2mv^(2)`
`U_(i)-U_(f)=1/2mv^(2)`
`U=1/2 mv^(2)`
`m=(2U)/(v^(2))`
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