Science 5 Force & Motion 23

Front

What is force?

Back

A push or pull on an object that can cause it to move, stop, or change direction.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is friction?

Back

A force that opposes the motion of an object, caused by the contact between two surfaces.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is speed?

Back

The distance an object travels per unit of time, often measured in miles per hour or meters per second.

Front

How do you calculate speed?

Back

Speed = Distance ÷ Time.

Front

What is a distance-time graph?

Back

A graph that shows how far an object has traveled over a period of time.

Front

What does a flat line on a distance-time graph indicate?

Back

The object is not moving; it is at rest.

Front

What does a steep line on a distance-time graph indicate?

Back

The object is moving quickly.

Front

What is the effect of a smooth surface on friction?

Back

A smooth surface has less friction, allowing objects to slide more easily.