Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 2 - Kinematics in One Dimension - Exercises and Problems - Page 67: 73

Answer

a) See the detailed answer below. b) See the figure below. c) $v_{0y}=17.2\;\rm m/s$

Work Step by Step

a) A tennis ball was fired vertically upward at $v_{0y}$ and it moved up until it reached a height of 10 m. At this moment its velocity was 10 m/s. Find its initial velocity. b) See the figure below. c) Solving for $v_{0y}$; $$v_{0y}=\sqrt{10^2+(2\cdot 9.8\cdot 10)}=\color{red}{\bf 17.2}\;\rm m/s$$
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