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 9 - Impulse and Momentum - Conceptual Questions: 1

Answer

$p_{2x}~$ > $~p_{1x} = p_{3x} = p_{5x}~$ > $p_{4x}$

Work Step by Step

In general, momentum $p = mv$ We can find the momentum of block 1. $p_{1x} = m~v_x$ $p_{1x} = (0.020~kg)(1~m/s)$ $p_{1x} = 0.020~kg~m/s$ We can find the momentum of block 2. $p_{2x} = m~v_x$ $p_{2x} = (0.020~kg)(2~m/s)$ $p_{2x} = 0.040~kg~m/s$ We can find the momentum of block 3. $p_{3x} = m~v_x$ $p_{3x} = (0.010~kg)(2~m/s)$ $p_{3x} = 0.020~kg~m/s$ We can find the momentum of block 4. $p_{4x} = m~v_x$ $p_{4x} = (0.010~kg)(1~m/s)$ $p_{4x} = 0.010~kg~m/s$ We can find the momentum of block 5. $p_{5x} = m~v_x$ $p_{5x} = (0.20~kg)(0.1~m/s)$ $p_{5x} = 0.020~kg~m/s$ We can rank the momenta in order from largest to smallest. $p_{2x}~$ > $~p_{1x} = p_{3x} = p_{5x}~$ > $p_{4x}$
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