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?(adsbygoogle = window.adsbygoogle || []).push({});

I get 90N * 5.0 m/s = 450W

The book says 9.0 * 10^2 W

It looks like I'm at half the value of the correct answer. Any help is greatly appreciated!

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# Bicycle and the hill

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