Question

A body that started from rest moves with constant acceleration in a straight line. After travelling a distance d the speed of the car is v. What is the distance travelled when the speed of the car was v/2? (Ans: d/4)

Answer 1

$v^2\sim d,$

$(\frac v{\frac v2})^2=\frac dx,$

$x=\frac d4 .$