Introductory Physics Worksheet With Answers - Mcas Review Packet #1 - Nnhs Page 23
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NNHS Introductory Physics: MCAS Review
Packet #1
Practice: Open-response Question #4
BE SURE TO ANSWER AND LABEL ALL PARTS OF THE QUESTION.
Show all your work (diagrams, tables, or computations)
If you do the work in your head, explain in writing how you did the work.
The graph below relates distance to time for a jogger on a morning run.
Distance vs. Time
4400
4000
3600
3200
2800
2400
2000
1600
1200
800
400
0
0
2
4
6
8
10
12
14
16
18
20
Time (minutes)
Juan is on a morning jog. His speed is represented in the graph.
a. At what rate of speed is Juan running between 4 min and 6 min?
b. According to this graph, what can you tell about Juan’s motion between 8 min and 16 min?
c. If Juan had maintained the same speed as in the first 8 min, how long would it have taken him
to run 4000 m? Explain your answer.
a.) speed = change in position/time
speed = (1200m-800m)/2 min = 200m/min
b.) Juan isn’t moving between 8min and 16min. The graph is a horizontal line: his
position is not changing. The slope is 0 so he is not moving.
c.) In the first 8 minutes his speed is 200m/min.
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