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The displacement of a particle starting ...

The displacement of a particle starting from rest (at `t = 0)` is given by `s = 6t^(2) - t^(3)`. The time in seconds at which the particle will attain zero velocity again, is

A

1) 2

B

2) 4

C

3) 6

D

4) 8

Text Solution

Verified by Experts

The correct Answer is:
B
Given `=6t-t^(3)`
Velocity V=(ds)/(dt)=12t-3t^(2)`
If velocity is Zero, then `0=12t-3t^(2)`
`Rightarrowt=4s`
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