A ball falls from height of 18.5 m, hits the floor, and rebounds vertically upward to height of 15.5 m. Assume that mall = 0.290 kg. (a) What is the impulse (in kg . m/s) delivered to the ball by the floor? magnitude kg . m/s direction ---Select--- V (b) If the ball is in contact with the floor for 0.0300 seconds, what is the average force (in N) the floor exerts on the ball? magnitude N direction --Select--- V