A girl throws a ball with an initial velocity v at an angle `45^@`. The ball strikes a smooth vertical wall at a horizontal distance d from the girl and after rebound returns to her hands. What is the coefficient of restitution between wall and ball ? `(v^2 gt dg)`

A ball is dropped on a horizontal surface from height h. If it rebounds upto h/2 after first collision then coefficient of restitution between ball and surface is

A ball is dropped on a horizontal surface from height h. If it rebounds upto height (h)/(2) after first collision then coefficient of restitution between ball and surface is

A ball is dropped on a horizontal surface from height h. If it rebounds upto height (h)/(2) after first collision then coefficient of restitution between ball and surface is

A small ball is projected with a velocity u at some angle with horizontal towards a smooth vertical wall at a distance d from the point of projection after rebounding from the wall . If e is the coefficient of restitution then find maximum distance d for which ball may return to point of projection .

A boy throws a ball with initial speed sqrt(ag) at an angle theta to the horizontal. It strikes a smooth vertical wall and returns to his hand. Show that if the boy is standing at a distance 'a' from the wall, the coefficient of restitution between the ball and the wall equals 1/((4sin2theta-1)) . Also show that theta cannot be less than 15^(@) .

A ball is projected at t = 0 with velocity v_0 at angle theta with horizontal. It strikes a smooth wall at a distance from it and then falls at a distance d from the wall. Coefficient of restitution is 'e' then :