College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 7 - Multiple-Choice Questions - Page 261: 8


The correct answer is: (a)

Work Step by Step

Let the initial velocity be $v_{0y}$. We can find an expression for the vertical velocity as a function of time: $v_y = v_{0y}-9.80~t$ We can find an expression for the momentum $p_y$ as a function of time: $p_y = m~v_y = m~( v_{0y}-9.80~t) = (-9.80~m)~t+m~v_{0y}$ This graph is a straight line with a y-intercept of $(m~v_{0y})$ and a slope of $-(9.80~m)$ The correct answer is: (a)
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