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Work + energy: conceptual questions. 15) a satellite is in a circular orbit above earth's surface. why is the work done on the satellite by the gravitational force zero? what does the work-kinetic energy theorem predict about the satellite's speed? . 16) a car traveling at 50.0 km/h skids a distance of 35 m after its brakes lock. estimate how far it will skid if its brakes lock when itsinital speed is 100.0 km/h. what happens to the car's kinetic energy as it comes to rest? . 17) explain why more energy is needed to walk up stairs than to walk horizontally at the same speed. 18) how can the work-kinetic energy theorem explain why the force of sliding friction reduces the kinetic energy of a particle?
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Work + energy: conceptual questions. 15) a satellite is in a circular orbit above earth's surface....
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