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A body of mass m=10^(-2)kg is moving in ...

A body of mass `m=10^(-2)kg` is moving in a medium and experiences a frictional forces `F=-kv^(2)`. Its initial speed is `v_(0)=10mc^(-1)`. If, after 10s, its enegy is `(1)/(8)mv_(0)^(2)`, the value of k will be:-

A

`10^(-1) kg m^(-1)s^(-1)`

B

`10^(-3) kg m^(-1)`

C

`10^(-3) kg s^(-1)`

D

`10^(-4) kg m^(-1)`

Text Solution

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The correct Answer is:
D
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