Question: A 2 9 1 0 - lb vehicle has a drag coefficient of 0 . 3 1 and a frontal area of 2 6 .

A 2910-lb vehicle has a drag coefficient of 0.31 and a frontal area of 26.85 ft 2.
What is the minimum horsepower required to maintain a 65-mph speed on a 4.5% upgrade
through an air density of 0.002238 slugs/ft 3?(Ans: 45.84 HP)

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