10 6 points James bounces the tennis ball before serving. He throws it vertically downwards at 1.3 m/s. 1. The ball's ma

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10 6 Points James Bounces The Tennis Ball Before Serving He Throws It Vertically Downwards At 1 3 M S 1 The Ball S Ma 1 (21.15 KiB) Viewed 344 times

10 6 points James bounces the tennis ball before serving. He throws it vertically downwards at 1.3 m/s. 1. The ball's mass is 59.5 grams, and it leaves his hand at a height, h=0.65 m above the ground. Using the ground as reference level. Calculate the gravitational potential energy of the ball as it leaves his hand. [2 marks] Calculate the kinetic energy of the ball as it leaves his hand. [2 marks] Calculate the total mechanical energy of the ball as it leaves his hand. [1 mark] 2. What is the ball's total mechanical energy just before it hits the ground, Le, when h-Om? Assume there is no air resistance. [1 mark] Show ALL your working.