What is the main objective of the lesson on friction?

Friction Forces in Motion and Everyday Life

Interactive Video
•
Physics, Science, Other
•
6th - 8th Grade
•
Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To explore the physics of motion
To learn about pool tables
To understand the concept of friction and its effects
To study the history of bicycles
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a bicycle eventually stop when you stop pedaling?
Because of air resistance
Due to the weight of the bicycle
Because of friction between the tires and the road
Due to the gravitational pull
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does friction depend on?
The color of the surfaces
The temperature of the environment
The texture of the surfaces and the contact force
The speed of the moving object
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which surface offers more friction?
A polished surface
A smooth surface
A rough surface
A wet surface
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when a man tries to push a heavy box and it doesn't move?
The man is not strong enough
The box is too light
The frictional force is greater than the push force
The box is on a slope
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can friction be reduced between two surfaces?
By increasing the roughness
By increasing the weight of the object
By decreasing the contact force
By using lubricants
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the force that opposes the motion of a body in contact with another surface called?
Gravity
Magnetic force
Friction
Centripetal force
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