Asked by Manny
A bicyclist can coast down a 5° hill at a constant 6.0 km/h. Assume the force of friction (air resistance) is proportional to the speed v so that Ffr = cv.
(a) Calculate the value of the constant c.
(b) What is the average force that must be applied in order to descend the hill at 20 km/h? The mass of the cyclist plus bicycle is 77 kg.
(a) Calculate the value of the constant c.
(b) What is the average force that must be applied in order to descend the hill at 20 km/h? The mass of the cyclist plus bicycle is 77 kg.
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