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Question

# A certain tractor is capable of pulling with a steady force of $14.0 \mathrm{kN}$ while moving at a speed of $3.00 \mathrm{~m} / \mathrm{s}$. How much power in kilowatts and in horsepower is the tractor delivering under these conditions?

Solution

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Given the following data

\begin{aligned} v&=3.00\ \mathrm{\dfrac{m}{s}}\\ F&=14.0\ \mathrm{kN}\\ &=14.0\times10^3\ \mathrm{N}\\ \end{aligned}

our objective is to calculate the power $P$ delivered by the tractor.

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