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The distance s metres covered by a boy i...

The distance `s` metres covered by a boy in `t` second, is given by `s=3t^(2)-8t+5`. The boy will stop after

A

`1s`

B

`3/4s`

C

`4/3s`

D

`4s`

Text Solution

Verified by Experts

The correct Answer is:
C
Given `s=3t^(2)-8t+5`
`impliesv=(ds)/(dt)=6t-8`
The boy will be stopped when velocity is zero.
`implies 6t-8=0impliest=4/3s`
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