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If a man has a velocity varying with tim...

If a man has a velocity varying with time given as `v=3t^(3),v` is in `m//s` and `t` in `sec` then `:`

Find out his acceleration after 4 seconds `:`

A

`9 m//s^(2)`

B

`18 m//s^(2)`

C

`12 m//s^(2)`

D

`6 m//s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`f=(dv)/(dt)=6t`
`f=6xx3=18 m//s_(2)`.
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