5) Two blocks that are at rest side by side on the frictionless floor are now subject to an external horizontal force F = 10 N. Find the force the block on the right exerts on the one on the left. 0. 9 kg 0.75kg 6) You throw a ball to your friend who is at a balcony 4 m above the ground. If she catches it 3 seconds after you throw, find a) the velocity of the ball as it leaves your hands b) the velocity of the ball just before she catches it. 4 m