A bowling ball is dropped from the top of a building that has a height of h = 156 m. Part (a) Assuming air resistance is negligible, what is the ball's speed, V, in m/s, when it strikes the ground? Part (b) If drag produces an opposing force of 10 N while the ball is falling, what is the ball's speed, Vf, in m/s, when it strikes the ground? Assume the ball has a mass of 5 kg. Part (c) A different ball was dropped and the final speed was measured to be Vf = 95 m/s while the drag force was measured to be 50 Newtons. What is the mass of this ball in kg?