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QUESTION 4 A boy drops a ball with a mass of 0,3 kg on a hard floor from a height of 0,9 m. It bounces to a maximum height of 0,7 m. The floor exerts a force of 60 N on the ball. 4.1 Write down the magnitude and direction of the force that the ball has on the floor (2) Calculate the: 4.2 Speed at which the ball hits the floor. (3) 4.3 (3) Time the ball is in contact with the floor if it has a speed of 3,45 m.s¹ bouncing off the floor. 4.4 The ball takes 0,304 s from the moment it is dropped, until it hits the ground. Sketch a graph (not to scale) of the position versus time to represent the complete movement of the ball. USE THE GROUND AS ZERO REFERENCE. Show the following on the graph: Height from which the ball is dropped. Height the ball reaches after the bounce