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PART B: Dynamics [14 marks, 30 minutes] Page3 1. A ball is thrown vertically upward from a window that is 3.6 m above the ground. Its initial speed is 2.8 m/s. With what speed does the ball hit the ground? [3 marks] 2. A circus clown is fired from a cannon into a net that is situated 2.0 m above the cannon and an unknown horizontal distance from it. The cannon is elevated at 50 to the horizontal and the clown's speed at launch is 15 m/s. Find the horizontal distance from the cannon where the net needs to placed in order for the clown to land in it. [5 marks] v- 15 m/'s 2.0 m 500