Answer
$$627.2 \ J.$$
Work Step by Step
First, we find the force ($F=ma$):
$$(4\ kg)(9.8 \ m/s^2)=39.2 \ N.$$
Now we find the work ($W=Fd$):
$$(39.2 \ N)(16 \ m)=627.2 \ J.$$
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 6 - Applications of the Integral - 6.5 Work and Energy - Exercises - Page 316: 1
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