Question

instantaneous velocity for a displacement function d(t)= 2-2t at any time is given by

Answer 1

Gives

Displacement function d(t)=2-2t

Assume d(t)=x=2-2t

Now velocity

$v=\frac{dx}{dt}$

Put value

$$v=\frac{d}{dt}(2-2t)=0-2=-2m/sec$$

Velocity

$v=-2m/sec$