7. A gazelle can run away from a cheetah with a speed of 35.0 m/s. If the average gazelle has a mass of 40.00 kg, what is the gazelle's kinetic energy, in kilojoules? 8. Miss D. Water, a stunt diver in the circus, had 15,000.0 3 of kinetic energy immediately before diving into a bucket of water at a speed of 24.0 m/s. What is her mass? 9. A 55.00 kg cyclist moving at a speed of 8.0 m/s along a flat road arrives at a steep hill. a. What is the initial KE of the cyclist? b. Using his KE, what is the maximum height the cyclist can glide up the hill without pedaling? 10. (BE CAREFUL) A shopping cart with a mass of 45.00 kg is released at a height of 4.2 m at the top of the store's entrance ramp. What is the cart's velocity at the bottom of the ramp? (HINT: This requires two calculations: one for GPE and one for KE)