Forces and Motion

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 gravity?

Back

Gravity is the force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Front

What is magnetism?

Back

Magnetism is a noncontact force that attracts certain metals, such as iron, and is produced by magnets.

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, stop, or change direction.

Front

What is Newton's First Law of Motion?

Back

An object at rest will stay at rest, and an object in motion will stay in motion at the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its motion, such as starting to move, stopping, or changing direction.

Front

What is the role of oil in machines?

Back

Oil reduces friction between the moving parts of a machine, allowing it to work more efficiently.

Front

How can you increase the distance a ball travels when thrown?

Back

To increase the distance a ball travels, you can increase the force used when throwing it.

Front

What happens when two forces are equal and opposite?

Back

When two forces are equal and opposite, they cancel each other out, resulting in no movement.

Front

What is the effect of friction on motion?

Back

Friction slows down or stops the motion of an object.