Question

A sailboat moves north for a distance of 10.00 km when blown by a wind from the southeast with a force of 5.00 × 10^4 N. How much work was done by the wind?

A. 0.00 J
B. 3.54 * 10^5 J
C. 3.54 * 10^8 J
D. 5.00 * 10^8 J

Answer 1

here is the situation described by your exercise:

Answer 2

yes:)

Answer 3

so the requested work is given by the subsequent formula:
\[\begin{gathered}
W = Fd\cos \left( {45} \right) = 5 \times {10^4} \times {10^3} \times \cos 45 \hfill \\
\hfill \\
\end{gathered} \]