Answer
0.50 m/sec
Work Step by Step
The rate of increase of the layer of people is = depth / time
depth = 0.25 m
time = L/speed = 1.75/3.50 = 0.50 sec
Rate R = 0.25/0.5 = 0.50 m/sec
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 2 - Motion Along a Straight Line - Problems - Page 32: 8a
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