Asked by erin

An RC car has a power rating of 12 W and a mass of 1.0 kg. How long would it take to reach 5 m/s ?

thanks.
Answered by Damon
work done = kinetic energy gained = power*time
(1/2) m v^2 = P * t

(1/2) (25) = 12 t
t = 25/24 seconds
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