Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 5 - Newton's Laws of Motion - Conceptual Questions - Page 140: 25

Answer

"Bad". The humam body is not strong enough to transmit a force capable of giving the truck the acceleration of a drag racer.

Work Step by Step

Suppose that: - mass of the truck: $m=1000~kg$; - acceleration of a drag racer: $a=20~m/s^2$ So: $F=ma=(1000~kg)(20~m/s^2)=20,000~N$ This is equivalent to holding a mass of: $W=mg$ -> $m=\frac{W}{g}=\frac{20,000~N}{9.81~m/s^2}\approx2000~kg$
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