Three toy cars, each with a mass of 0.050 kg, roll down ramps with different heights. The height of each ramp and the speed of each car at the bottom of each ramp is given in the table. Copy and complete the table by calculating the GPE for each car at the top of the ramp relative to the bottom of the ramp and the KE at the bottom from each car's motion down the ramp. Round your values two decimal places. How do the val- ues of GPE and KE you calculate compare? On a cold day, you rub your hands together to make them warm. Diagram the energy transformations that occur, starting with the chemical potential energy that your muscles store. A boulder with a mass of 2,500 kg rests on a ledge that is 200 m above a canyon floor. Estimate the gravita- tional potential energy of the boulder-Earth system relative to the canyon floor. A boulder with a mass of 2,500 kg on a ledge 200 m above the ground falls. Estimate the speed of the boulder just before it hits the ground