Newton's Three Laws of Motion

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 is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

Give an example of Newton's First Law of Motion.

Back

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

Front

What is Newton's Second Law of Motion?

Back

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

Tags

NGSS.MS-PS2-2

Front

What does the formula F=ma represent?

Back

F is the force applied, m is the mass of the object, and a is the acceleration produced.

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NGSS.MS-PS2-2

Front

Give an example of Newton's Second Law of Motion.

Back

If you push a shopping cart, it accelerates faster if it is empty (less mass) than if it is full (more mass).

Tags

NGSS.MS-PS2-2

Front

What is Newton's Third Law of Motion?

Back

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

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NGSS.MS-PS2-1

Front

Give an example of Newton's Third Law of Motion.

Back

When you jump off a small boat, you push the boat backward as you move forward.

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NGSS.MS-PS2-1

Front

What are action and reaction force pairs?

Back

They are forces that are equal in size but opposite in direction, acting on two different objects.

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NGSS.MS-PS2-1

Front

Do action and reaction forces occur only when there is motion?

Back

No, they occur whether there is motion or not.

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NGSS.MS-PS2-5