College Physics (7th Edition)

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

Chapter 5 - Work and Energy - Learning Path Questions and Exercises - Multiple Choice Questions - Page 172: 19


When they reach the ground, they (c) both have the same speed.

Work Step by Step

Stone 2 goes up and then comes down. When it crosses the point from which it was thrown, it has the same speed, $v$ going vertically downward - same as stone 1. They fall from the top of the building, starting at the same speed, and thus, reach the ground at the same speed.
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