Answer to Question #339721 in Physics for eri

Question #339721

A 2000 kg truck accelerates from 20kph to 120 kph in 10 seconds. Find its engine’s power output in watts.

Expert's answer

"P=\\frac{W}{t}=\\frac{mv^2\/2}{t}"

"P=\\frac{2000*(120^2-20^2)\/3.6^2}{10}=2.16*10^5\\:\\rm W"

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