College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 3 - Motion in Two Dimensions - Learning Path Questions and Exercises - Exercises - Page 100: 66

Answer

This means the pass will not be completed, the throw is short.

Work Step by Step

$50ft/s=15.24m/s$ $30yd=27.43m$ $5ft=1.524m$ $t=\frac{x}{v_{x}}=\frac{27.43}{15.24cos40^{\circ}}=2.35s$ $h=h_{0}+v_{0}t-\frac{1}{2}gt^{2}=1.524+15.24sin40^{\circ}\times2.35-\frac{9.8\times 2.35^{2}}{2}=-2.52m$ This means the pass will not be completed, the throw is short.
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