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A particle moves along a straight line a...

A particle moves along a straight line according to the law `s=t^3/3 -3t^2+9t+17`, where s is in meters and t in second. Velocity decreases when

A

`0lt t lt 5`

B

`0lt t lt 3`

C

`t gt 5`

D

`t gt 3`

Text Solution

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The correct Answer is:
B
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