Forces

Front

What is a force?

Back

A force is a vector quantity that represents an interaction that can change the motion of an object.

Front

Is force a scalar or vector quantity?

Back

Force is a vector quantity.

Front

What is the SI unit of force?

Back

The SI unit of force is the newton (N).

Front

What does Newton's First Law of Motion state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding past each other.

Front

How does kinetic friction relate to an object's velocity?

Back

Kinetic friction always acts in the opposite direction of an object's velocity.

Front

What is tension in physics?

Back

Tension is a force that is transmitted through a string, rope, or cable when it is pulled tight by forces acting from opposite ends.

Front

Is tension a scalar or vector quantity?

Back

Tension is a vector quantity.

Front

What is the relationship between action and reaction forces?

Back

For every action, there is an equal and opposite reaction (Newton's Third Law of Motion).

Front

What happens to the forces exerted by two objects in a tug of war?

Back

The forces exerted by both objects are equal in magnitude and opposite in direction.