- #1
Ethan_Tab
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Homework Statement
A car has a power output of 45kW and travels at a constant speed of 30m/s. What force is the engine applying on the car?
Homework Equations
F=m*a
W=ΔKE+ΔGPE
KE=½mv^2
GPE=mgh
W=F*d
P=ΔE/ΔT
gh_1+½v_1^2=gh_2+½v_2^2
The Attempt at a Solution
I really have no clue. Since there is no change in energy (ΔE) in terms of kinetic or gravitational potential energy, I don't know what to do.
Any help is much appreciated.