FYKOS Year 29 Series 6 Problem 3 — Going downhill · FYKOS 29 #29.6.3

Physics · mechanics

Problem

We are going up and down the same hill with the slope

α

, driving at the same speed

v

and having the same gear (and therefore the same RPM of the engine), in a car with mass

M

. What is the difference between the power of the engine up the hill (propulsive power) and down the hill (breaking power)?