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

What is an example of harmful friction?

Back

Engine parts wearing out is an example of harmful friction.

Front

Where can you jump higher, on Earth or on the Moon?

Back

You can jump higher on the Moon due to its lower gravity.

Front

What is air resistance?

Back

Air resistance is a type of friction that occurs when air pushes against a moving object, causing it to slow down.

Front

What is inertia?

Back

Inertia is the tendency of an object to remain at rest or in motion unless acted upon by an external force.

Front

What happens when an unbalanced force acts on a moving object?

Back

An unbalanced force can change the direction, speed up, or stop a moving object.

Front

What is gravity?

Back

Gravity is the force that pulls objects toward each other, such as the Earth pulling us down.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause a change in motion.

Front

What is an example of a force?

Back

An example of a force is pushing a door open.

Front

What is motion?

Back

Motion is the change in position of an object over time.