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A skateboarder weighing 1245 grams travels down hill at a rate of 367.5 centimeters in 3 seconds. What is the skateboarder's kinetic energy?
A roller coaster cart travels to the top of the track with a PE of 125.7 J and descends to the bottom of the largest hill with a KE of 89.5 J. What is the mechanical energy of the roller coaster?
A golf ball weighing 86.4 grams is dropped from a height of 1.15 meters. What is the gravitational potential energy, GPE, of the golf ball before it is dropped?
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