Question

A car is moving on a straight road. The velocity of the car varies with time as shown in the figure. Initially (at t=0) the car was at x=0, where x is the position of the car at any time t. Find acceleration of car at time t=15 sec and t=55 sec

Answer 1

$a_{15}=0~\frac m{s^2},$

$a_{55}=-0 .4~\frac m{s^2}.$