Force and Motion Study Guide Part 1: Calculating Speed, Time, Distance/ Motion Graphing (must be completed in class 1/13/16; Review and corrections on 1/14/16; have signed and return 1/15/16) 1. If a boat travels 39 kilometers in 3 hours, what is its average speed? (show work) 2. How far will a dog run in 30 minutes if it runs at 10 m/s ? (show work) 3. How long will it take a fish to swim 96 m if it swims at 3 m/s? (show work) 4. You are biking down a street. Name at least 3 objects that could possibly be use as a reference point for detecting the movement. 5. You are on your bike waiting to cross a street, what might make you feel like you are moving? a. A friend stopped on the bike next to you b. The ground c. A car that was stopped next to you moves d. The stoplight pole Explain your reasoning/ thinking. 6. What is a change in position called? 7. A change in velocity is called what? 8. Velocity includes which of the following? 9. Name at least 3 units of measurement for distance. What is the SI unit for distance? 10. Name at least 3 units of measurement for speed. What is the SI unit for speed? 11. On a distance time graph, what does a horizontal line mean? 12. On a distance time graph, what does a steep line mean? 13. On a distance time graph, a downward sloping line would indicate what? Use the following graphs to answer questions 14 – 16. B. A. C. D. 14. Which graph would best describe the motion of an object when it was speeding up? A B C D 15. Which graph would best describe the motion of an object when it was moving with a
uniform motion? A B C D 16. Which graph would best describe the motion of an object when it was not moving? A B C D 17. Carolyn jogged a half mile to school. One morning, halfway to school, she stopped to watch a bird building a nest. When she realized she was late, she jogged the rest of the way to school to avoid being reported tardy. Which graph below shows Carolyn’s speed during her jog to school? Two skateboards were given a push and set into motion. Use the following graph of this motion to answer question 18. Distance vs. Time Graph for Two Skateboards of Equal Weight
80
70
60
Distance (cm)
50
Skateboard 1
Skateboard 2
40
Linear
(Skateboard 1)
Linear
(Skateboard 2)
30
20
10
0
0
5
10
15
20
25
30
35
Time (sec)
18. The speed of the fastest skateboard is about _____.
A. .5 cm/sec
B. 1 cm/sec
C. 2 cm/sec
D. 5 cm/sec
The graph below refers to questions 19-21 and shows the progress made by a beetle moving along a
straight line.
19. If the beetle keeps moving at the same speed, how long will it take to travel 10 cm? A. 4 seconds B. 6 seconds C. 20 seconds
D. 25 seconds
20. What is the approximate speed of the beetle represented by the graph above?
A.
B.
C.
D.
0 cm/sec
.4 cm/sec
2 cm/sec
4 cm/sec
21. Which of the following best describes the motion of beetle represented by the graph
above?
A.
B.
C.
D.
speeding up
slowing down
constant
no motion