1. 1. An object’s distance from another object is changing.
acceleration
force
inertia
motion

2. 2. A place or object used for comparison to determine if something is in motion
Center of gravity
Reference point
Mass
Inertia

3. 3. Speed in a given direction
acceleration
velocity
speed
momentum

4. 4. A push or a pull on an object
Mass
Friction
Force
Momentum

5. 5. When the overall force changes an object’s motion it is a(n)____
Balanced force
Unbalanced force

6. 6. Equal forces acting on one object in opposite directions (the object won’t move)
Balanced force
Unbalanced force

7. 7. Force that one substance exerts on another when the two rub against each other
Mass
Friction
Air resistance
Force

8. 8. Rate at which velocity changes
Acceleration
Speed
Velocity
Momentum

9. 9. Force that pulls objects toward each other
Friction
Gravity
Free fall
Momentum

10. 10. A type of friction that occurs between objects and air
Mass
Friction
Air resistance
Force

11. 11. The tendency of an object to resist changes in its motion
Unbalanced force
Inertia
Friction
Motion

12. 12. What is the formula for calculating speed?
S = D x T
S = D  T
S = T  D

13. 13. What is the formula for calculating acceleration?
A = I – F T
b. A = F – I
c. A = T – I F

14. 14. Force = Mass x Acceleration
This formula shows that both the size of the force and the mass of the object itself affect the object’s acceleration, or change in velocity (speed or direction).
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

15. 15. For every action there is an equal and opposite reaction.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

16. 16. An object at rest will stay at rest & an object in motion will stay in motion until acted upon by a force.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

17. 17. If you set a book on the desk, the book will stay there.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

18. 18. You lift a heavy box of books with more force than a box of sweaters.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

19. 19. A rocket takes off Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

20. 20. You push on a ball harder than your little brother does and your ball goes farther.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

21. 21. If you are riding in a car that suddenly stops, you surge forward until the seatbelt you are wearing stops you.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

22. 22. When you paddle a canoe, you push back in the water with the paddle and move forward in the canoe.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

23. Solve the following word problems.
Don’t forget your units!!

24. 23. A cheetah is running after its prey
23. A cheetah is running after its prey. It dashes for a meekrat that is 7 meters away. It reaches the meekrat in just 2 seconds. What is the cheetah’s average speed?

25. 24. You are at one end of a solid metal pipe, and your friend is at the other end. Your friend hits the pipe. You hear the sound 1.5 seconds later. You both measure the pipe, and it is 7,500 meters. At what average speed did the sound your friend made travel through the pipe?

26. 25. You are traveling with your family to Disney World from Atlanta, Georgia. Your father tells you that Disney World is 412 kilometers away. It will take you 5 hours to reach Disney World? What is your velocity?

27. 26. During PE, you are racing against your classmates
26. During PE, you are racing against your classmates. Your beginning speed is 8 meters/second. The longer you run, the more tired you get and you slow down to 5 meters/second. Your teacher times your deceleration at 3 seconds. What is your acceleration?

28. Check your answers

29. 1. An object’s distance from another object is changing.
acceleration
force
inertia
motion

30. 2. A place or object used for comparison to determine if something is in motion
Center of gravity
Reference point
Mass
Inertia

31. 3. Speed in a given direction
A. Acceleration
B. Velocity
C. speed
D. Momentum

32. 4. A push or a pull on an object
Mass
Friction
Force
Momentum

33. 5. When the overall force changes an object’s motion it is a(n) ____
Balanced force
Unbalanced force

34. 6. Equal forces acting on one object in opposite directions (the object won’t move)
Balanced force
Unbalanced force

35. 7. Force that one substance exerts on another when the two rub against each other
Mass
Friction
Air resistance
Force

36. 8. Rate at which velocity changes
Acceleration
Speed
Velocity
Momentum

37. 9. Force that pulls objects toward each other
Friction
Gravity
Free fall
Momentum

38. 10. A type of friction that occurs between objects and air
Mass
Friction
Air resistance
Force

39. 11. The tendency of an object to resist changes in its motion
Unbalanced force
Inertia
Friction
Motion

40. 12. What is the formula for calculating speed?
S = D x T
S = D  T
S = T  D

41. 13. What is the formula for calculating acceleration?
A = I – F T
b. A = F – I
c. A = T – I F

42. 14. Force = Mass x Acceleration
This formula shows that both the size of the force and the mass of the object itself affect the object’s acceleration, or change in velocity (speed or direction).
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

43. 15. For every action there is an equal and opposite reaction.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

44. 16. An object at rest will stay at rest & an object in motion will stay in motion until acted upon by a force.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

45. 17. If you set a book on the desk, the book will stay there.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

46. 18. You lift a heavy box of books with more force than a box of sweaters.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

47. 19. A rocket takes off Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

48. 20. You push on a ball harder than your little brother does and your ball goes farther.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

49. 21. If you are riding in a car that suddenly stops, you surge forward until the seatbelt you are wearing stops you.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

50. 22. When you paddle a canoe, you push back in the water with the paddle and move forward in the canoe.
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of Gravitational Pull

51. 23. A cheetah is running after its prey
23. A cheetah is running after its prey. It dashes for a meerkat that is 7 meters away. It reaches the meerkat in just 2 seconds. What is the cheetah’s average speed?
S = D  T
S = 7  2 =
S = 3.5 meters/second

52. 24. You are at one end of a solid metal pipe, and your friend is at the other end. Your friend hits the pipe. You hear the sound 1.5 seconds later. You both measure the pipe, and it is 7,500 meters. At what average speed did the sound your friend made travel through the pipe?
S = D  T
S = 7,500  1.5 =
S = 5000 meters/second

53. 25. You are traveling with your family to Disney World from Atlanta, Georgia. Your father tells you that Disney World is 412 kilometers away. It will take you 5 hours to reach Disney World? What is your velocity?
S = D  T
S = 412  5
S = 82.4 kilometers/hour
V= 82.4 km/hour South

54. 26. During PE, you are racing against your classmates
26. During PE, you are racing against your classmates. Your beginning speed is 8 meters/second. The longer you run, the more tired you get and you slow down to 5 meters/second. Your teacher times your deceleration at at 3 seconds. What is your acceleration?
A = F – I T
= 5 – 8 3
A = -1 m/s/s
= -3