Car Average HP Calculator

A kg car starting from rest, accelerates for s .
The magnitude of the acceleration is m/s² or ft/s².

Determine the average power generated by the net force that accelerates the car in horsepower, HP?
HP, ANSWER

SOLUTION:

Memory recall, Newton's 2nd law of motion. Force, F = mass X acceleration
F = m * a

N =	Kg X m / s2

Memory recall Kg * m / s² is equal to Newton, N

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Memory recall , Velocity Final, V_f = Velocity initial + acceleration X time

Vf = V_i + a t ; V_i = 0 , when starting from rest.

Vf m / s =

m / s2 X s

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Memory recall , Velocity average, V_ave = (Velocity initial + Velocity final ) / 2

V_ave = (V_i + V_f)/2 ; V_i = 0 , when starting from rest.
V_ave = V_f / 2

Vave m / s =

m / s / 2

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Memory recall: Average Power,
P_ave = Force * Velocity average
P_ave = F * V_ave
Memory recall, N * m = Joule
Memory recall, N * m / s (velocity) =
Joule / s = watts
Memory recall, 746 watts = 1 HP

P_ave = F V_ave

W =

N * m / s

Pave watts =

HP

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