Force and Newton's Laws Review

Front

What is the standard unit force is measured in?

Back

Newtons

Front

What is a force that works AGAINST MOTION?

Back

Friction

Front

The combination of all the forces acting on an object is the...?

Back

net force

Front

If two boys are pulling with the same amount of force, what will happen?

Back

They will not move at all.

Front

A person would weigh less on the Moon than on Earth because...?

Back

Moon has less mass and therefore less gravity.

Front

What is Newton's First Law of Motion?

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 does Newton's Second Law of Motion state?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is gravitational force?

Back

The attractive force between two masses.