How much energy must be dissipated by the brakes
The driver of a 3000 lb car, coasting down a hill, must stop at the bottom. His speed when he applies the brakes is 60 mph & he is 100 feet (vertically) from the bottom of the hill.
How much energy (as heat) must be dissipated by the brakes?
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Compute the order of magnitude of the mass of a bathtub half full of water. (bathtub. Assume the tub measures 1.3 m by 0.5 m by 0.3 m.)
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The driver of a 3000 lb car, coasting down a hill, must stop at the bottom. His speed when he applies the brakes is 60 mph & he is 100 feet (vertically) from the bottom of the hill. How much energy (as heat) must be dissipated by the brakes?
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