1. Motion and Forces

2. A push or a pull on an object
Forces
Force
A push or a pull on an object

3. Forces
Balanced Force
will NOT change the motion of an object

4. Forces

5. Forces
10 Newtons

6. Forces
10 Newtons

7. Forces
10 Newtons
10 Newtons

8. Forces
NET Force ?
10 Newtons
10 Newtons

9. Forces
NET Force
The Force you are left with after all interactions

10. Forces
NET Force ?
10 Newtons
10 Newtons

11. Forces
NET Force = 0
10 Newtons
10 Newtons

12. Forces
4 N

13. Forces
4 N
6 N

14. Forces
4 N
6 N
10 Newtons

15. Forces
NET Force ?
4 N
6 N
10 Newtons

16. Forces
NET Force = 0
4 N
6 N
10 Newtons

17. Forces

18. Forces

19. Forces

20. Forces
Unbalanced Force
will change the motion of an object

21. Forces
10 Newtons

22. Forces
10 Newtons
20 Newtons

23. Forces
NET Force ?
10 Newtons
20 Newtons

24. Forces
NET Force =
10 N
10 Newtons
20 Newtons

25. Forces
35 Newtons
15 Newtons

26. Forces
NET Force ?
35 Newtons
15 Newtons

27. Forces
NET Force =
20 N
35 Newtons
15 Newtons

28. Forces
12 N

29. Forces
12 N
16 N

30. Forces
12 N
16 N
27 Newtons

31. Forces
NET Force ?
12 N
16 N
27 Newtons

32. Forces
NET Force = 1 N
12 N
16 N
27 Newtons

33. Forces
NET Force = 1 N
12 N
16 N
27 Newtons

34. Newton’s 3 Laws of Motion
Forces
Newton’s Laws of Motion

35. Sir Issac Newton

36. Sir Issac Newton
English

37. Sir Issac Newton
English

38. Forces
1st Law of Motion
Law of Inertia

39. Objects at rest will stay at rest…
Forces
1st Law of Motion
Law of Inertia
Objects at rest will stay at rest…

40. and objects in motion will stay in motion ….
Forces
1st Law of Motion
Law of Inertia
and objects in motion will stay in motion ….

41. unless acted upon by an outside force.
Forces
1st Law of Motion
Law of Inertia
unless acted upon by an outside force.

42. things like to keep on doing what they are already doing
Forces
1st Law of Motion
Law of Inertia
things like to keep on doing what they are already doing

43. Forces

44. Forces

46. Forces
2nd Law of Motion

47. The net Force on an object is equal to the product of …
Forces
2nd Law of Motion
The net Force on an object is equal to the product of …

48. its acceleration and its mass.
Forces
2nd Law of Motion
its acceleration and its mass.

49. Forces
2nd Law of Motion
F = ma

50. Forces
2nd Law of Motion
F = ma
Force = mass x acceleration

51. F = ma 2nd Law of Motion Force = mass x acceleration Newton kilogram
Forces
2nd Law of Motion
F = ma
Force = mass x acceleration
Newton
kilogram
m/sec2
1 Newton = 1 kg m/sec2

53. Forces
3rd Law of Motion

54. For every action, there is an equal and opposite reaction.
Forces
3rd Law of Motion
For every action, there is an equal and opposite reaction.

56. Forces

57. Forces

58. Forces

59. Forces

60. Forces

65. Friction- the force that opposes the sliding motion of two touching surfaces
Type of Friction
Description
Example
Static
Friction in which two forces are not moving past one another.
Pushing a fridge across a floor
Sliding
Friction where two forces are moving past one another.
Sledding down a hill
Rolling
Friction between a rolling object and the surface it rolls on.
Skateboard moving on the ground
Fluid
Friction when object moves through fluid, meaning either a liquid or gas.
skydiving

66. Static Sliding Rolling Fluid
Type of Friction
Description
Example
Static
Friction in which two forces are not moving past one another.
Pushing a fridge across a floor
Sliding
Friction where two forces are moving past one another.
Sledding down a hill
Rolling
Friction between a rolling object and the surface it rolls on.
Skateboard moving on the ground
Fluid
Friction when object moves through fluid, meaning either a liquid or gas.
skydiving

67. Air Resistance- friction-like force that opposes motion of objects that move through air-depends on speed, size, and shape of an object

68. Universal Law of Gravitation
The Force of Gravity acts between ALL objects in the universe

70. Weight

71. Weight
The pull of gravity on any object

73. Weight
Wt = m G

74. Weight
Wt = m G
Weight = mass x Gravity

75. Weight
Wt = m G
Weight = mass x Gravity kg

76. Weight
Wt = m G
Weight = mass x Gravity kg
m/s2

77. Weight
Wt = m G
Weight = mass x Gravity N. kg
m/s2

79. Free Fall

80. Free Fall
When the only Force acting on a falling object is gravity

81. Projectile Motion

82. Projectile Motion
The motion of an object thrown horizontally