A bicyclist coasts down a 7.0 degree hill at a steady speed of 5.0 m/s. Assuming a total mass of 75kg (bicycle plus rider), what must be the cyclist's power output to climb the same hill at the same speed?
I got 90N * 5.0 m/s = 450W but that is not the answer
The book says 9.0 * 10^2 W
i...