Forces and Motion Review

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, such as the force that pulls a ball back to Earth.

Front

What is friction?

Back

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

Front

Which surface has the most friction: a road, carpet, an ice skating rink, or astro turf?

Back

Carpet has the most friction.

Front

What happens to an object when gravity acts on it?

Back

Gravity pulls objects downward, causing them to fall.

Front

What is the relationship between mass and force needed to move an object?

Back

As mass decreases, the force needed to move the object also decreases.

Front

How is speed calculated?

Back

Speed is calculated by dividing distance by time (Speed = Distance/Time).

Front

What is the effect of reducing mass on the force required to move an object?

Back

Reducing mass makes it easier to move the object.

Front

What is the role of gravity in motion?

Back

Gravity influences the motion of objects by pulling them toward the center of the Earth.

Front

What is the difference between speed and velocity?

Back

Speed is the rate at which an object moves, while velocity includes both speed and direction.

Front

What is an example of a situation where friction is beneficial?

Back

Friction helps us walk without slipping.