fter a 0.385-kg rubber ball is dropped from a window on the third floor of the UAlbany Physics Building from a height of 18.5 m, it bounces off the concrete of the Podium surface and rebounds to a height of 15.0 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. magnitude kg · m/s direction up (b) Estimate the time the ball is in contact with the floor to be 0.04 seconds. Calculate the average force the floor exerts on the ball. magnitude N direction up