A certain automobile engine delivers 2.09 ✕ 104 W (28.0 hp) to its wheels when moving...
A certain automobile engine delivers 2.09 ✕ 104 W
(28.0 hp) to its wheels when moving at a constant speed of 21.0 m/s
(
47 mi/h). What is the resistive force acting on the
automobile at that speed?
N
Homework Answers
here,
the engine power , P = 2.09 * 10^4 W
constant speed , v = 21 m/s
let the resistive force acting on the automobile at that speed be F
P = F * v
2.09 * 10^4 = F * 21
solving for F
F = 995.23 N
the resistive force acting on the automobile at that speed is 995.23 N
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