Newton's Laws of Motion

Newton's three laws of motion describe the relationship between an object, the forces acting upon it, and its motion in response to those forces.

First law (Inertia)

An object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.

Second law (F = ma)

The more mass an object has, the more force required to movie it. The more force you apply to an object, the more it accelerates.

Third law (action-reaction)

When one object exerts a force on a second object, the second object simultaneously exerts a force equal in magnitude and opposite in direction on the first object.

• I don't get it.

• GOT IT!

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Inertia is defined as...

• an object's mass

• the forces acting on an object

• an object's resistance to a change in motion

• the name of my first born

In the equation F=ma, the m stand for...

• the object's mass

• the forces acting on an object

• the acceleration of the object

• the object's weight

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Every __________ has an equal and opposite __________.

• newton, law

• mass, acceleration

• force, motion

• action, reaction

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The wooden sphere travels faster and farther than the solid metal sphere. Which law explains this motion?

• Newton's First Law of Motion (Inertia)

• Newton's Second Law of Motion (F=ma)

• Newton's Third Law of Motion (Action/Reaction)

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The girl is not moving even though the table is being pushed and pulled beneath her. Which law explains this motion?

• Newton's First Law of Motion (Inertia)

• Newton's Second Law of Motion (F=ma)

• Newton's Third Law of Motion (Action/Reaction)

The guy that is by himself will win the race. Which law explains this motion?

• Newton's First Law of Motion (Inertia)

• Newton's Second Law of Motion (F=ma)

• Newton's Third Law of Motion (Action/Reaction)

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The girls push each other the same distance in opposite directions. Which law explains this motion?

• Newton's First Law of Motion (Inertia)

• Newton's Second Law of Motion (F=ma)

• Newton's Third Law of Motion (Action/Reaction)

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By exerting a force downward, an equal and opposite force pushes upwards and the jellyfish accelerates. Which law explains this motion?

• Newton's First Law of Motion (Inertia)

• Newton's Second Law of Motion (F=ma)

• Newton's Third Law of Motion (Action/Reaction)

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Oh no! Ken gets ejected from his skateboard car. Which law explains this motion? Which law explains this motion?

• Newton's First Law of Motion (Inertia)

• Newton's Second Law of Motion (F=ma)

• Newton's Third Law of Motion (Action/Reaction)