A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing below illustrates. The crest of the second hill is circular, with a radius of r = 36.7 m. Neglect friction and air resistance. What must be the height h of the first hill so that the skier just loses contact with the snow at the crest of the second hill?

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.