Newtons 1st Law - HILL

Front

What does Newton's 1st Law of Motion state?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net external force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Front

What happens to a moving object in the absence of external forces?

Back

It continues to move at a constant velocity.

Front

How does mass relate to inertia?

Back

The greater the mass of an object, the greater its inertia, meaning it will require more force to change its motion.

Front

What is the net force required to keep a cannonball moving in space?

Back

Zero, because no force is required to keep it moving in the absence of external forces.

Front

If a car suddenly stops, why do passengers lurch forward?

Back

Because of inertia, passengers continue moving forward as their bodies resist the change in motion.

Front

Do all objects have inertia?

Back

Yes, all objects with mass have inertia.

Front

What is the relationship between net force and motion?

Back

A net force is required to change the motion of an object; without it, the object will maintain its current state of motion.

Front

What is an example of Newton's 1st Law in everyday life?

Back

A book resting on a table will remain at rest until someone picks it up.

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.