Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 7 - Kinetic Energy and Work - Problems - Page 175: 69

Answer

165 kW

Work Step by Step

Recall: $P_{avg}=\frac{W}{\Delta t}=\frac{\vec{F}\cdot\vec{d}}{\Delta t}=\frac{Fd\cos \theta}{\Delta t}$ Given: $F=100\times660\,N$, $d=150\,m$, $\theta=0^{\circ}$ and $\Delta t=60.0\,s$ Result: $P_{avg}=\frac{66000\,N\times150\,m\times\cos0^{\circ}}{60.0\,s}=165\,kW$
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