# Motor physics

Car traveling at 130 km/h on the highway. Pulling power of the motor is 8 kN.

Determine engine power in kW.

Result

P =  288.9 kW

#### Solution:

$v = 130 \ km/h = 36.11 \ m/s \ \\ F = 8 \ kN \ \\ \ \\ W = Fs \ \\ P = W/t = Fs/t = Fv \ \\ P = 8 \cdot 36.11 = 288.9 \ \text{kW}$

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