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Friction is a force that opposes motion. Without friction, objects would slide indefinitely.
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Types of friction include static friction, sliding (kinetic) friction, and rolling friction.
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Static friction prevents an object from moving. Example: A heavy box rests on the floor without sliding.
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Sliding friction occurs when surfaces slide against each other. Example: A sled sliding down a snowy hill.
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The type of surface affects friction; rough surfaces create more friction than smooth ones. Weight increase leads to more friction, as it increases the normal force.
1. What is friction, and what does it do? What would happen if friction didn't exist?
2. What are the types of friction?
3. What is static friction? Give an example.
4. What is sliding friction? Give an example.
5. How does the type of surface relate to the force of friction?
What is the relationship between weight and friction?
Answer each question in order, answer in very short sentences, and in bold words
10 answers
Guiding Questions
1. What are some examples of everyday forces?
2. What are free-body diagrams, and how do you interpret them?
What is important about finding the net force in free-body diagrams?
Answer each question in order, answer in very short sentences, and in bold words
1. What are some examples of everyday forces?
2. What are free-body diagrams, and how do you interpret them?
What is important about finding the net force in free-body diagrams?
Answer each question in order, answer in very short sentences, and in bold words
Guiding Questions
1. Why do some objects float?
2. What is buoyant force?
3. What is fluid pressure, and what happens to it as depth increases?
4. What is Archimedes’s principle, and why is it important?
5. What is density, and what happens when density increases?
6. How can you predict whether an object will float or sink in a fluid if you don't know the force of its weight or the buoyant force?
7. What is density a measure of? How does it help determine if an object will sink or float?
8. Why do helium balloons float?
How are ships made of steel able to float?
Answer each question in order, answer in very short sentences, and in bold words
1. Why do some objects float?
2. What is buoyant force?
3. What is fluid pressure, and what happens to it as depth increases?
4. What is Archimedes’s principle, and why is it important?
5. What is density, and what happens when density increases?
6. How can you predict whether an object will float or sink in a fluid if you don't know the force of its weight or the buoyant force?
7. What is density a measure of? How does it help determine if an object will sink or float?
8. Why do helium balloons float?
How are ships made of steel able to float?
Answer each question in order, answer in very short sentences, and in bold words
Guiding Questions
1. What are some examples of objects with spring force?
2. How do you determine if an object is elastic?
3. How does an elastic material behave?
4. What does Hooke's law state? How can you represent it mathematically?
5. How is elasticity important to your health?
Answer each question in order, answer in very short sentences, and in bold words
1. What are some examples of objects with spring force?
2. How do you determine if an object is elastic?
3. How does an elastic material behave?
4. What does Hooke's law state? How can you represent it mathematically?
5. How is elasticity important to your health?
Answer each question in order, answer in very short sentences, and in bold words
Guiding Questions
1. What is momentum?
2. How do you calculate momentum?
3. Can small objects have as much momentum as larger objects? Why?
4. Why is it important to know that momentum has direction?
What does it take to change an object's velocity and its momentum?
Answer each question in order, answer in very short sentences, and in bold words
1. What is momentum?
2. How do you calculate momentum?
3. Can small objects have as much momentum as larger objects? Why?
4. Why is it important to know that momentum has direction?
What does it take to change an object's velocity and its momentum?
Answer each question in order, answer in very short sentences, and in bold words
Guiding Questions
1. What is the difference between momentum and inertia?
2. How do Newton's laws apply to the momentum of an object?
3. What is impulse, and why is it important?
What is the law of conservation of momentum?
Answer each question in order, answer in very short sentences, and in bold words
1. What is the difference between momentum and inertia?
2. How do Newton's laws apply to the momentum of an object?
3. What is impulse, and why is it important?
What is the law of conservation of momentum?
Answer each question in order, answer in very short sentences, and in bold words
Guiding Questions
1. What is meant by the saying "the momentum of the system is conserved"?
2. What happens in a Newton’s cradle?
3. How is momentum conserved in a Newton's cradle when one steel ball hits the other?
4. How is momentum conserved during collisions?
5. How does Newton's third law explain the law of the conservation of momentum?
6. What is a complex collision? Does the law of conservation of momentum still apply?
7. What is the difference between an inelastic and an elastic collision?
Answer each question in order, answer in very short sentences, and in bold words
1. What is meant by the saying "the momentum of the system is conserved"?
2. What happens in a Newton’s cradle?
3. How is momentum conserved in a Newton's cradle when one steel ball hits the other?
4. How is momentum conserved during collisions?
5. How does Newton's third law explain the law of the conservation of momentum?
6. What is a complex collision? Does the law of conservation of momentum still apply?
7. What is the difference between an inelastic and an elastic collision?
Answer each question in order, answer in very short sentences, and in bold words
Guiding Questions
What are the equations for calculating momentum?
What are the equations for calculating momentum?
Guiding Questions
What are the equations for calculating momentum?
Answer each question in order, answer in very short sentences, and in bold words
What are the equations for calculating momentum?
Answer each question in order, answer in very short sentences, and in bold words
Guiding Questions
1. How are forces applied to objects in a collision?
2. How does the impulse-momentum theorem relate to the force applied during collisions?
What is the purpose of this design challenge?
Answer each question in order, answer in very short sentences, and in bold words
1. How are forces applied to objects in a collision?
2. How does the impulse-momentum theorem relate to the force applied during collisions?
What is the purpose of this design challenge?
Answer each question in order, answer in very short sentences, and in bold words