# Variable acceleration?

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The displacement s m of a particle after t seconds is given by s=t4−4t

The particle is stationary after____s

The displacement s m of a particle after t seconds is given by s=t4−4t

The particle is stationary after____s

##### 1 Answer

Apr 19, 2018

#### Explanation:

The particle is stationary when its velocity is

Velocity is the derivative of displacement.