what are forces ?. 1.what is a force? 2.how do we measure forces? 3.what are some common examples of...
TRANSCRIPT
![Page 1: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/1.jpg)
What Are Forces ?
![Page 2: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/2.jpg)
1. What is a force?
2. How do we measure forces?
3. What are some common examples of forces
Questions
http://nnhsphysics670.pbworks.com/Intro-Forces-and-Free-Body-Diagrams
![Page 3: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/3.jpg)
1. What is a Force?Definition
Term Term Symbol Unit Unit Symbol
![Page 4: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/4.jpg)
1. What is a Force?Definition
Term Term Symbol Unit Unit Symbol
force F newton N
A force is a push or a pull. A force is a push or a pull.
![Page 5: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/5.jpg)
What would you do to get a box to start moving?
![Page 6: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/6.jpg)
What would you do to get a box to start moving?
Everyday language
Physics language
![Page 7: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/7.jpg)
What would you do to get a box to start moving?
Everyday language
Physics language
To get the box to start moving I would PUSH the box.
To get the box to start moving I would PUSH the box.
![Page 8: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/8.jpg)
What would you do to get a box to start moving?
![Page 9: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/9.jpg)
What would you do to get a box to start moving?
Everyday language
Physics language
To get the box to start moving I would PUSH the box.
To get the box to start moving I would PUSH the box.
![Page 10: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/10.jpg)
What would you do to get a box to start moving?
Everyday language
Physics language
To get the box to start moving I would PUSH the box.
To get the box to start moving I would PUSH the box.
To get the box to start moving I would APPLY a FORCE.
To get the box to start moving I would APPLY a FORCE.
![Page 11: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/11.jpg)
Consider Tug-of-War
![Page 12: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/12.jpg)
Consider Tug-of-War
Sarah’s team applies a ____________of 10 _______ to the ___________ on the rope.
10 N
![Page 13: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/13.jpg)
Consider Tug-of-War
Sarah’s team applies a___FORCE___of 10 NEWTONS to the ___LEFT________ on the rope.
10 N
![Page 14: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/14.jpg)
Consider Tug-of-War
Jaya’s team applies of ____________of 10 _______ to the ___________ on the rope.
![Page 15: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/15.jpg)
Consider Tug-of-War
Jaya’s team applies of ___FORCE___of 10 NEWTONS to the ___RIGHT________ on the rope.
10 N
![Page 16: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/16.jpg)
Balanced Forces
The __________ are ______________ in magnitudebut ___________________ in direction.
10 N10 N
![Page 17: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/17.jpg)
Balanced Forces
The FORCES are EQUAL in magnitudebut OPPOSITE in direction.
10 N10 N
![Page 18: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/18.jpg)
Unbalanced Forces
20 N10 N
![Page 19: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/19.jpg)
Unbalanced Forces
20 N10 N
10 N
The ____________is 10 newtons.
![Page 20: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/20.jpg)
Unbalanced Forces
20 N10 N
10 N
The _NET FORCE__ is 10 newtons.
![Page 21: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/21.jpg)
Net Force
If two forces are acting in the same direction, they add together.
…the impact of all forces acting on an object…
![Page 22: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/22.jpg)
Net Force
Example: Imagine Cindy is pulling a wagon to the right with a force of 5N, and Kelly is pushing the wagon to the right with a force of 7 N:
1. Draw an arrows to represent these forces on the wagon below.
2. What is the net force on the wagon? _____N + ____ N = _____ N3. In what direction does the force act? _____________________4. The forces are _______________.
![Page 23: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/23.jpg)
Net Force
If two forces are acting in opposite directions, they subtract.
…the impact of all forces acting on an object…
![Page 24: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/24.jpg)
Net Force
Example: Imagine Peter is pulling a treasure chest to the left with a force of 10 N, and Brian is pulling the treasure chest to the right with a force of 7 N.
1. Draw an arrows to represent these forces on the wagon below.
2. What is the net force on the wagon? _____N - ____ N = _____ N3. In what direction does the force act? _____________________4. The forces are _______________.
![Page 25: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/25.jpg)
Balanced Forces(net force = 0)
Unbalanced Forces(net force ≠ 0)
No change in motion
Change in motion
![Page 26: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/26.jpg)
Balanced vs. Unbalanced Forces
Let’s look at two scenarios:
1. You are sitting on a chair. Do you think the forces on you are balanced? Why or why not?
![Page 27: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/27.jpg)
Balanced vs. Unbalanced Forces continued…
2. A space shuttle is taking off. Do you think the force is balanced or unbalanced? Why or why not?
![Page 28: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/28.jpg)
Question: How do unbalanced forces change motion?
1. ______ things up
2. ______ things down
3. Make things ______.
![Page 29: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/29.jpg)
Practice with Net Force
magnitude how much?
units newtons
direction right, left, up, down
![Page 30: What Are Forces ?. 1.What is a force? 2.How do we measure forces? 3.What are some common examples of forces Questions](https://reader030.vdocument.in/reader030/viewer/2022032806/56649f0a5503460f94c1e5e4/html5/thumbnails/30.jpg)
For you to Try:
• Worksheet--Practice with Net Force