Which of the following is TRUE about the friction force between two surfaces? Mark only one. The surfaces must be in contact with each other in order to have friction. The surfaces must be moving against each other in order to have friction. O The magnitude of the friction force depends on the types of materials present, the force of contact between them, and the surface area of the objects. The magnitude of the friction force increases as the relative speed of the objects increases

College Physics
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ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
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Chapter5: Further Applications Of Newton's Laws: Friction, Drag, And Elasticity
Section: Chapter Questions
Problem 3PE: (a) What is the maximum frictional force in the knee joint of a person who supports 66.0 kg of her...
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Which of the following is TRUE about the friction force between two surfaces? Mark only one.
The surfaces must be in contact with each other in order to have friction.
The surfaces must be moving against each other in order to have friction.
O The magnitude of the friction force depends on the types of materials present, the force of contact between them,
and the surface area of the objects.
The magnitude of the friction force increases as the relative speed of the objects increases
Transcribed Image Text:Which of the following is TRUE about the friction force between two surfaces? Mark only one. The surfaces must be in contact with each other in order to have friction. The surfaces must be moving against each other in order to have friction. O The magnitude of the friction force depends on the types of materials present, the force of contact between them, and the surface area of the objects. The magnitude of the friction force increases as the relative speed of the objects increases
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