Intro. to Forces Flashcard 6.7A

Front

What is a noncontact force?

Back

A noncontact force is a force that can act on an object without the objects touching each other.

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Front

Give an example of a noncontact force.

Back

Magnetism is an example of a noncontact force, as magnets can attract or repel each other without touching.

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Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it is in contact with another surface.

Front

When is less friction beneficial?

Back

Less friction is beneficial when sliding objects, like a hockey puck on ice, to allow for smoother movement.

Front

What is force?

Back

Force is an interaction (push or pull) that changes the motion of an object.

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Front

What are the two types of forces?

Back

The two types of forces are contact forces and noncontact forces.

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Front

What is gravitational force?

Back

Gravitational force is the force that attracts two bodies toward each other, such as the Earth pulling objects toward its center.

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Front

What is an example of gravitational force?

Back

An example of gravitational force is a ball falling to the ground after being thrown.

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Front

What is magnetism?

Back

Magnetism is a force that can attract or repel certain materials, such as iron, without direct contact.

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Front

What happens when two magnets are brought close together?

Back

They can either attract each other or repel each other, depending on their poles.

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