A particle strikes a horizontal frictionless floor with a speed 'u' at an angle 'theta' with the vertical and rebounds with a speed 'v' at an angle 'alpha' with the vertical. Find the value of 'v' if 'e' is the coefficient of restitution.

A particle strikes a horizontal frictionless floor with a speed u, at an angle theta with the vertical, and rebounds with a speed upsilon , at an angle phi with the vertical. The coefficient of restitution between the particle and the floor is e. The angle phi is equal to :

A particle strikes a horizontal frictionless floor with a speed u, at an angle theta to the vertical, and rebounds with a speed v , at an angle phi to the vertical. The coefficient of restitution between the particle and the floor is e. The magnitude of v is

A particle strikes a horizontal smooth floor with a velocity a making an angle theta with the floor and rebounds with velocity v making an angle phi with the floor. If the coefficient of restitution between the particle and the floor is e , then