1. What’s Your Wager? Motion Style!

2. What’s Your Wager?
• You will start with $1000.
• You will wager an amount of money before you hear the question (like Final Jeopardy)
• Answer the question…
- if you are correct, add the waged
amount to your total score
- if you are not correct, subtract the
waged amount from your total score
• You must wager at least $100 for each question.
• You can ONLY wager $100 if you are at
$100 or less (like zero).
GOOD LUCK!

3. PLACE
YOUR
WAGER!

4. How do you know when something has moved?
Question #1:
How do you know when something has moved?

5. How do you know when something has moved?
Question #1:
How do you know when something has moved?
You know something has moved if it has changed its position or location based on a fixed reference point.

6. PLACE
YOUR
WAGER!

7. Question #2:
What is a force?

8. mean that there will be motion.
Question #2:
What is a force?
A force is a push or a pull exerted on an object. It can cause an object to move, if it is not balanced by an equal and opposite force. Just having a force does not automatically
mean that there will be motion.

9. PLACE
YOUR
WAGER!

10. While you are sitting in your seat, what forces are acting on you?
Question #3:
While you are sitting in your seat, what forces are acting on you?

11. While you are sitting in your seat, what forces are acting on you?
Question #3:
While you are sitting in your seat, what forces are acting on you?
Gravity and the force of the chair/ground holding you up (called a normal force). Since you are sitting still, the two forces acting on you are balanced.

12. PLACE
YOUR
WAGER!

13. What are the effects of an unbalanced force on an object?
Question #4:
What are the effects of an unbalanced force on an object?

14. The motion of the object changes
Question #4:
What are the effects of an unbalanced force on an object?
The motion of the object changes
(slows down, speeds up, changes direction, etc.)

15. PLACE
YOUR
WAGER!

16. What two quantities are needed to measure SPEED?
Question #5:
What two quantities are needed to measure SPEED?

17. Speed is calculated using distance and time. Formula: S = D / T
Question #5:
What two quantities are needed to measure speed?
Speed is calculated using distance and time.
Formula:
S = D / T

18. PLACE
YOUR
WAGER!

19. Question #6:
Give an example of a situation when a force is exerted, but no motion occurs.

20. Question #6:
Give an example of a situation when a force is exerted, but no motion occurs.
An example of this would be pushing on the wall. The force you exert is not greater than the force of the wall standing still, so no motion occurs.

21. PLACE
YOUR
WAGER!

22. Question #7:
Why is it important to know the direction of a force being applied to an object?

23. + Forces working together + - Forces working against each other -
Question #7:
When you know the direction of the force being applied, you can accurately calculate the net force on the object, therefore predicting its motion (or lack of).
Remember…
+ Forces working together +
- Forces working against each other -

24. PLACE
YOUR
WAGER!

25. Question #8:
You are traveling in a car to school. The average speed of the car is 30 mph. To your mom (who is driving), you are sitting still. Are you really?

26. as a reference point, you are moving 30 miles in an hour.
Question #8:
You are traveling in a car to school. The average speed of the car is 30 mph. To your mom (who is driving), you are sitting still. Are you really?
It depends on your reference point. When compared to your mom, you aren’t moving. However, if you use your house
as a reference point, you
are moving 30 miles in an hour.

27. PLACE
YOUR
WAGER!

28. Question #9:
What would be the result of two unbalanced forces acting on each other?

29. (in the direction of the stronger force)
Question #9:
What would be the result of two unbalanced forces acting on each other?
A CHANGE IN MOTION !
(in the direction of the stronger force)

30. PLACE
YOUR
WAGER!

31. Question #10:
You ride your bike to school, and it takes you 4.5 minutes to get to school… You travel the exact same path home from school, but you notice that it takes you 4 minutes to get home. What does that tell you about the average speed you had going compared to coming home?

32. Question #10:
Your speed must have increased going home (maybe you were more awake), since you traveled the same path in a faster time.

33. PLACE
YOUR
WAGER!

34. Question #11:
Describe the motion of an object that has balanced forces acting on it.

35. Question #11:
ANSWER:
If the forces acting on the object are balanced and the object is moving, it must be moving at a constant speed.

36. PLACE
YOUR
WAGER!

37. Question #12:
True or False?
A car traveling on ice experiences more friction than a car traveling on a “normal” road.

38. Ice creates less friction (which is why it is so slippery).
Question #12:
True or False:
A car traveling on ice experiences more friction than a car traveling on a “normal” road.
FALSE!
Ice creates less friction
(which is why it is so slippery).

39. PLACE
YOUR
WAGER!

40. Question #13:
As a balloon car traveled across the floor, it started to curve. What caused the car to change direction (from traveling in a straight line to curving) ?

41. cause the change to the car.
Question #13:
The forces acting on the car changed direction, causing the motion of the car to change. Since the applied force (balloon or mousetrap) is the strongest (and causing the motion), it had to have been a change to this force to
cause the change to the car.

42. PLACE
YOUR
WAGER!

43. Complete this sentence… Newton is a unit of measurement of __ .
Question #14:
Complete this sentence…
Newton is a unit of measurement of __ .

44. Complete this sentence… Newton is a unit of measurement of FORCE .
Question #14:
Complete this sentence…
Newton is a unit of measurement of FORCE .

45. PLACE
YOUR
WAGER!

46. If time remains constant,
Question #15:
If time remains constant,
and distance increases as an object moves, what would you expect to happen to the object’s speed?

47. Speed increases as distance increases if time remains the same.
Question #15:
If time remains constant,
and distance increases as an object moves, what would you expect to happen to the object’s speed?
Speed increases as distance increases if time remains the same.

48. PLACE
YOUR
WAGER!

49. Question #16:
If you have two or more forces interacting, you can calculate the overall force in the situation, thus predicting the resulting motion. What is this overall force called?

50. The result is called the net force.
Question #16:
If you have two or more forces interacting, you can calculate the overall force in the situation, thus predicting the resulting motion. What is this overall force called?
The result is called the net force.

51. PLACE
YOUR
WAGER!
There are 2 parts to the next question, so you car earn ½ of your wager for each part.

52. Using the following distance vs. time, graph, answer questions a & b.
What color graph shows a object that has stopped motion?
What color line shows the fastest speed away from a reference point?

53. Question #17: What color graph shows a object that has stopped motion?
What color line shows the fastest speed away from a reference point?
Green
b. Red

54. PLACE
YOUR
WAGER!

55. Why do they have different perspectives about what happened?
Question #18:
A mom and a dad are watching their daughter in a track meet. The mom is standing right on the finish line, and the dad is sitting in the bleachers, far ahead of the starting line. As the runners finish the race, the mom sees that their daughter crossed the finish line first. But then mom notices that the dad is disappointed. He must think that the daughter lost the race. Hmmm…
Why do they have different
perspectives about what happened?

56. Question #18:
Mom and dad have different perspectives because they have different positions from which they are judging the motion of the runners.
In this case, the mother’s perspective is more accurate, since she has a better (closer to the finish line) perspective from which to judge the motion of the runners.

57. PLACE
YOUR
WAGER!

58. Complete this statement…
Question #19:
Complete this statement…
When the forces acting on an object are balanced, you can expect to see
_____________ .

59. the motion remain as is/no change in motion
Question #19:
Complete this statement…
When the forces acting on an object are balanced, you can expect to see
the motion remain as is/no change in motion
(if it is moving, it will keep
moving; if not, it won’t start).

60. PLACE
YOUR
WAGER!

61. Friction always works __ motion.
Question #20:
Friction always works __ motion.

62. Friction always works AGAINST (opposite direction of) motion.
Question #20:
Friction always works AGAINST
(opposite direction of) motion.

63. PLACE
YOUR
WAGER!

64. Which is a measurement of speed?
Question #21:
Which is a measurement of speed?
12 mph north
3 meters
4 hours
2.9 m/s

65. Which is a measurement of speed?
Question #21:
Which is a measurement of speed?
12 mph north
3 meters
4 hours
2.9 m/s

66. PLACE
YOUR
WAGER!

67. Calculate the net force in this diagram:
Question #22:
Calculate the net force in this diagram:
35 N
100 N
40 N

68. Calculate the net force in this diagram:
Question #22:
Calculate the net force in this diagram:
35 N
100 N
40 N
Net Force = 25 N to the left

69. PLACE
YOUR
WAGER!

70. Name four forces acting on a skier traveling down a hill.
Question #24
Name four forces acting on a skier traveling down a hill.

71. Name four forces acting on a skier traveling down a hill.
Question #24
Name four forces acting on a skier traveling down a hill.
Gravity (pulled down)
Normal force of the mountain (working against gravity)
Applied force (initial force pushing you down the mountain)
Air resistance
Friction (between your skis and the mountain)

72. …how well do you remember
LAST QUESTION!
PLACE
YOUR
WAGER
…how well do you remember
this concept???

73. Where does the ball have the greatest amount of potential energy?
LAST QUESTION:
Where does the ball have the greatest amount of potential energy? A B
ramp C

74. The ball has the greatest potential energy at position A!
LAST QUESTION:
The ball has the greatest potential energy at position A! A B
ramp C