U4 Force & Motion Amplify Science

Front

What is force?

Back

A push or pull on an object that can cause it to change its speed or direction.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is mass?

Back

The amount of matter in an object, usually measured in grams or kilograms.

Front

What is acceleration?

Back

The rate at which an object changes its velocity, which can be an increase or decrease in speed.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion; an object at rest stays at rest, and an object in motion stays in motion unless acted upon by a force.

Front

What is the relationship between mass and force?

Back

The greater the mass of an object, the more force is required to change its motion.

Front

What happens when two objects collide?

Back

They exert forces on each other, which can change their speeds and directions.

Front

What is friction?

Back

A force that opposes the motion of an object, often caused by contact with another surface.

Front

What is the effect of a net force on an object?

Back

A net force causes an object to accelerate in the direction of the net force.

Front

What is the difference between speed and velocity?

Back

Speed is how fast an object is moving, while velocity includes both speed and direction.