A ball is projected from point O on the ground. It hits a smooth vertical wall AB at a height h and rebounds elastically. The ball finally lands at a point C on the ground. During the course of motion, the maximum height attained by the ball is H. (a) Find the ratio (h)/(H) if (OA)/(OC) = (1)/(3) (b)Find the magnitude of average acceleration of the projectile for its entire course of flight if it was projected at an angle of 45^(@) to the horizontal.

A ball is projected from point O on the ground. It hits a smooth verti

1.	A ball is projected from point O on the ground. It hits a smooth vertical wall AB at a height h and rebounds elastically. The ball finally lands at a point C on the ground. During the course of motion, the maximum height attained by the ball is H. (a) Find the ratio (h)/(H) if (OA)/(OC) = (1)/(3) (b)Find the magnitude of average acceleration of the projectile for its entire course of flight if it was projected at an angle of 45^(@) to the horizontal.
Answer» Answer :(a) `(16)/(25)` (B) `sqrt(2)g`