During a match of tennis, a 0.0585-kg tennis ball travelling at 19.4 m/s [W] is struck horizontally. The paddle exerts eastward force of 24N [E] over a time of 0.15s Determine the velocity of the ball after the collision

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?