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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:An athlete is training on a 100 m long linear track. His motion is described by the graph of his position vs. time, below.
x (m)
100-
80
60
40
20
direction VA
magnitude VB
direction VB
magnitude v
с
تو سفر
direction VC
magnitude VD
A
10
B
C
4
20 30 40
(a) For each segment of the graph, find the magnitude and direction of the athlete's velocity.
0
magnitude VA
X
D
50
positive x
60
Remember that velocity is the change in position per the change in time. If the graph plots position vs. time, what property of the plot in each segment is related to velocity? Think
about the initial and final times and positions for each segment. m/s
The magnitude is zero. ✓ X
-1.33
X
t (s)
Remember that velocity is the change in position per the change in time. If the graph plots position vs. time, what property of the plot in each segment is related to velocity? Think
about the initial and final times and positions for each segment. m/s
negative x
X
Remember that velocity is the change in position per the change in time. If the graph plots position vs. time, what property of the plot in each segment is related to velocity? Think
about the initial and final times and positions for each segment. m/s
positive x
1.67
X
Remember that velocity is the change in position per the change in time. If the graph plots position vs. time, what property of the plot in each segment is related to velocity? Think
about the initial and final times and positions for each segment. m/s
positive x
direction VD
(b) What are the magnitude and direction of the athlete's average velocity over the entire 60 s interval?
magnitude
m/s
direction
Q Search
D
18
H
<
(((
Ų
10:1
6/1/
Expert Solution
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