Force and Motion review flashcard

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces rub against each other.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other. On Earth, it pulls everything toward the center of the planet.

Front

What does it mean when we say a surface has low friction?

Back

A surface with low friction allows objects to slide easily over it, causing less resistance to motion.

Front

How does friction affect the speed of a moving car?

Back

Friction slows down the car by opposing its motion, making it harder for the car to move forward.

Front

What is the role of gravity when an object is dropped?

Back

Gravity pulls the object downward, causing it to accelerate towards the ground.

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Front

What happens to a bike on a steep hill without friction?

Back

Without friction, the bike would slide down uncontrollably and could not be stopped or controlled.

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Front

What is an example of a force that can act at a distance?

Back

Gravity is an example of a force that can act at a distance, pulling objects toward each other without direct contact.

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Front

What is the effect of applying brakes on a bike going downhill?

Back

Applying brakes increases friction, which slows down the bike and helps control its speed.

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Front

What type of force is friction?

Back

Friction is a contact force because it occurs when two surfaces are in contact with each other.

Front

What is the difference between push and pull forces?

Back

A push force moves an object away, while a pull force brings an object closer.

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