Motion

1. Which axis carries information about the independent variable?

2. Information measured in an experiment is plotted on which axis?

3. Information which is not determined experimentally is plotted on which axis?

4. Create a time-distance graph from the following data: 

time(s)    	1   3     5     7     9     11     13     15     16     19

distance(cm)	2   5.9	  9.8   14.2  18.6  22.3   26.5   29.2   31.7   38.1

5. What is the equation for the slope of a straight line graph?

6. Use it to find the slope of the graph you just drew.

7. The slope of a time-distance graph is what type of quantity? Why?

8. Which graph plot line would rise faster, one with a slope of 1.4 or 0.3? Why?

9. Define uniform motion.

10. In general, what does the slope of a graph tells us?

11. a) In most situations involving motion, the object speeds up and slows down as it moves, e.g., students trying to move through the hallways at noon time. Another example is a car in traffic. Sketch a time-position graph (don't bother with any values on the axes) representing a car in heavy traffic. The shape of the plot line is the point of this question.
b) Even when an object's speed is irregular, the average velocity can be found. What is the formula?

12. Find the speed of a cat that slinks along a hedge, moving 10.7 m in 26.8 s.

13. What is the speed of a bluejay that flies 40.5 m in 5.6 s?

14. Kristy is trying to catch a certain someone who sits at the back of the class and decides to chase him down. Find her speed if she runs 80.3 m in 4.6 s.

15. If an elephant's speed is 0.2 m/s, how far will it move in 28 s?

16. A tortoise's speed is 0.10 m/s. In what time would it move 38.3 m?

17. While on a weekend trip to New York city, Mitch spots Angelina Jolie and just HAS to meet her (obviously!). He runs after her at 2.7 m/s. How far will he have moved in 15.9 s?

18. Kevin wanders to class at 0.1 m/s. In 5 minutes, how far would he travel?

19. While showing off for the little kids, Alex wipes out on his snowboard. After the crash he tumbled 30 m in 4.2 s, what was his speed in:
a) m/s b) km/hr?

20. Lumpy the alligator can run surprisingly quickly at 2.5 m/s. In how many minutes would it travel 300 m?

21. As time passes, how does the velocity of an accelerating car compare with that of a car moving at a constant (uniform) velocity?

22. a) Which car covers the same distance in each second? Why?
b) Which car covers a longer distance in each second? Why?

23. A mouse sniffs along at 0.1 m/s. but, hearing steps, it starts to scurry for safety. In just 3.7 s it accelerates to 0.9 m/s. Find its acceleration.

24. A little grade nine kid moves down the hall at 1.2 m/s. When he sees Suzanne coming, he begins to run. After 3.2 s, he is moving at 3.6 m/s. What is his acceleration?

25. Ben throws a textbook at Nick. After just 0.2 s, it is moving at 10.4 m/s. Find its acceleration.

26. A car moving at 4.5 m/s accelerates at 2.5 m/s2. After 7 s, it will be moving how fast?

27. Drew is out roaming the halls at 0.3 m/s. Seeing Mrs. Forrester come around the corner, he accelerates at 0.7 m/s2 for 8 s. By then, how fast is he moving?

28. A train pulls away from the station, accelerating at 0.4 m/s2. After 2 minutes, it is moving how fast?

29. Philly has joined the school ping pong team. On his serve, the ping pong ball is accelerated at 4.6 m/s2. After how many seconds would it be travelling at 9.3 m/s?

30. Coes pitches a ball, accelerating it at 5.7 m/s2. After how much time would it be travelling at 10.3 m/s?

31. A spider is poking along at 0.2 m/s when Laurel spots it. As she doesn=t like spiders, she decides to squash it but it accelerates at 1.7 m/s2. After what time would it be moving at 1.7 m/s?

32. a) Create a time-distance graph from the following data describing the motion of an accelerating object. 

time(s)     - 0   1   3   5   7   9   11   13   15   17   19 


distance(m) - 0   1   4   8  13  19   26   34   43   53   64

33. Draw a distance-time graph for an object moving at 25 m/s that slows to a stop in 5 s.

34. Describe the shape of a curve in a distance-time graph for an accelerating object.

35. Describe the shape of a curve in a velocity-time graph for an accelerating object.

36. a) Find the slope of the graph in Figure 10.9 of the text.
b) You are finding what type of quantity?

37. Are the following situations showing constant velocity or acceleration?
a) a turkey vulture gliding above the countryside on air currents
b) light turns green, right foot down (flashing lights in mirror, no points)
c) on a toboggan with your friends, you just push over the edge of a steep hill
d) on a level trail, you walk with an even stride.