A particle is moving such that its position coordinate (x, y) is
(2m, 3m) at time t = 0
(6m, 7m) at time t = 2 s and
(13m, 14m) at time t = 5s.

Given figure shows velocity-time graph of a ball of mass 250g rolling on a concretefloor. Compute the acceleration and the frictional force of the floor on the ball?

What will be the ratio of distances moved by a freely falling body from rest in 4^th and 5^th seconds of journey