Motorcycle engine

The motorcycle engine has a constant power of 1.2 kW for 0.5 hours. How much work does the engine do? Express work in kWh and Ws units.

Correct answer:

W₁ =  0.6 kWh
W₂ =  2160000 Ws

Step-by-step explanation:

$$\begin{gathered} P=1.2\text{ kW } \\ t=0.5\text{ h } \\ {W}_1=P\cdot t=1.2\cdot 0.5={\displaystyle \frac{3}{5}}={\displaystyle \frac{3}{5}}\text{ kWh}=0.6\text{ kWh} \end{gathered}$$

$W_2=3600\cdot 1000\cdot W_1=3600\cdot 1000\cdot 0.6=2160000\text{ Ws}$

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