From a point on a smooth floor of a room a ball is shot to hit a wall. The ball then returns back to the point of projection. If the time taken by the ball in returining is twice the time taken to reach the wall, find twice the time taken to reach the wall, find the coefficient of restitution between was and ball.

From a point on smooth floor of a room a toy ball is shot to hit a wall. The ball then returns back to the point of projection. If the time taken by ball in returining is twice the time taken in reaching the wall find the coefficient of restitution:

A ball is projected from ground with a speed 70m//s at an angle 45^(@) with the vertical so that it strikes a vertical wall at horizontal distance (490)/(3)m from the point of projection. If the ball returns back to the poin tof projection without any collision with ground then find the coefficient of restitution between the ball and wall.

A ball is projected from ground with a speed 70m//s at an angle 45^(@) with the vertical so that it strikes a vertical wall at horizontal distance (490)/(3)m from the point of projection. If the ball returns back to the poin tof projection without any collision with ground then find the coefficient of restitution between the ball and wall.

A ball is thrown stright upwards with a speed v from a point h meters above the ground .Find the time taken for the ball to strike the ground.

A cylindrical hall has a horizontal smooth floor. A ball is projected along the floor from A point on the wall in a direction making an angle theta with the radius through the point the ball returns bak to the initial point after two impacts with the wall. if the coefficient of restitution is e than tan^(2)theta will be

A cylindrical hall has a horizontal smooth floor. A ball is projected along the floor from A point on the wall in a direction making an angle theta with the radius through the point the ball returns bak to the initial point after two impacts with the wall. if the coefficient of restitution is e than tan^(2)theta will be