Hi! I'm having a hard time with these two problems. Any help would be greatly appreciated.(adsbygoogle = window.adsbygoogle || []).push({});

1. in a circus performance, a monkey is strapped to a sled and both are given an initial speed of 2.0 m/s up an 18 degree inclined track. The combined mass of the monkey and sled is 20 kg, and the coefficient of kinetic friction between the sled and incline is 0.20. How far up the incline do the monkey and sled move?

2. While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 70 kg person develops a power of 73 W during a race, how fast is the person running? Assume a running step is 1.5 m long.

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# Power and conservation of energy

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