Motor physics

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

Determine engine power in kW.

Correct answer:

P =  288.9 kW

Step-by-step explanation:

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

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