A15.0-g marble is dropped from rest on the floor 1.44 m below. (a) if the marble bounces straight upward to a height of 0.640 m, what is the magnitude and direction of the impulse delivered to the marble by the floor? (b) if the marble had bounced to a greater height, would the impulse delivered to it have been greater or less than the impulse found in part (a)? explain.