Forces and Motion

Front

What is friction?

Back

Friction is a force that resists the motion of two surfaces sliding against each other.

Front

What is gravity?

Back

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

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 magnetism?

Back

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

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

How does oil affect friction in machines?

Back

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

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What is an example of a noncontact force?

Back

Magnetism is an example of a noncontact force, as it can attract or repel objects without direct contact.

Front

What is the effect of friction on motion?

Back

Friction slows down or stops the motion of an object.

Front

What is the difference between push and pull forces?

Back

A push force moves an object away from you, while a pull force brings an object closer to you.