1.

If a man has a velocity varying with time given as `v=3t^(2),v` is in `m//s` and `t` in `sec` then `:` Find out his acceleration after 3 seconds `:`A. `9m//s^(2)`B. `18m//s^(2)`C. `12m//s^(2)`D. `6m//s^(2)`

Answer» Correct Answer - B
`f=(dv)/(dt)=6t`
`t=6xx3=18m//s^(2)`


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