Presentation is loading. Please wait.

Presentation is loading. Please wait.

Forces You will be able to: ● Identify and describe the changes in position, direction, and speed of an object when acted upon by unbalanced forces. ●

Similar presentations


Presentation on theme: "Forces You will be able to: ● Identify and describe the changes in position, direction, and speed of an object when acted upon by unbalanced forces. ●"— Presentation transcript:

1 Forces You will be able to: ● Identify and describe the changes in position, direction, and speed of an object when acted upon by unbalanced forces. ● Identify balanced and unbalanced forces. Adapted from a PowerPoint by Kathleen Ingram, Lamar Middle School

2 What are some common forces? Gravity – the force with which the earth, moon, or another massive object attracts another object towards itself.

3 What are some common forces? Normal force – a support force exerted upon an object in contact to another object.

4 Net Force The net force is the combined effect of all forces acting on an object.

5 Force Balanced Forces  forces acting on an object that are opposite in direction and equal in size  no change in speed

6 Force Unbalanced forces  unbalanced forces that are not opposite and equal  velocity changes (object accelerates) F friction W F pull F net NN

7 Are there different forces acting on the figure skaters? What direction are the forces acting? Are the forces balanced or unbalanced? How do you know?

8 Balanced and unbalanced forces es/parkworldplot/flash/concepts/balanced andun.htm es/parkworldplot/flash/concepts/balanced andun.htm

9 Today we will demonstrate… (A)basic relationships between force and motion using simple machines including pulleys and levers (A)that an object will remain at rest or move at a constant speed and in a straight line if it is not being subjected to an unbalanced force (B)how unbalanced forces cause changes in the speed or direction of an object's motion

10 Tug of War  drawing

11 Force Problems 20 N What is the net force? Are the forces balanced or unbalanced? Describe the motion of the object. (none, accelerate to left, accelerate to right) 20 N

12 Force Problems 20 N What is the net force? Are the forces balanced or unbalanced? Describe the motion of the object. (none, accelerate to left, accelerate to right) 30 N

13 Force Problems 20 N What is the net force? Are the forces balanced or unbalanced? Describe the motion of the object. (none, accelerate to left, accelerate to right) 10 N

14 Force Problems 20 N What is the net force? Are the forces balanced or unbalanced? Describe the motion of the object. (none, accelerate to left, accelerate to right) 30 N

15 Force Problems 30 N What is the net force? Are the forces balanced or unbalanced? Describe the motion of the object. (none, accelerate to left, accelerate to right) 30 N


Download ppt "Forces You will be able to: ● Identify and describe the changes in position, direction, and speed of an object when acted upon by unbalanced forces. ●"

Similar presentations


Ads by Google