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# Newton's Third Law

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

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Newton's Third Law

Students will learn that Newton's 3rd law holds that for every force there is an equal but opposite reaction force. Important to note that the force and reaction force act on different objects.
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## Newton’s Third Law of Motion

Describes Newton's Third Law of Motion.
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8
• Interactive Simulations

## Pirate Ship

Learn about Newton's 3rd Law, and how the concept of the 'force pair' allows us to understand interactions between objects.
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• Simulation

## Third Law Simulation

Explore changing forces to move a heavy cart to exact positions.
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• PLIX

## Rocket Science

Newton's Third Law Interactive
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• PLIX

## Newton's 3rd Law: Gravity of Neptune

Newton's Third Law Interactive
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• Video

## Physics of Walking

Reviews Newton's Third Law and explains how it relates to walking.
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• 2

## Newton's Third Law Quiz - PPB

Know that every action has an equal and opposite reaction, and what object each force is acting on when Newton's 3rd law applies.
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## Newton's Third Law of Motion Quiz

Reviews action and reaction forces, and implicitly introduces the importance of defining the system under observation.
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• Critical Thinking

## Newton's Third Law Discussion Questions

A list of student-submitted discussion questions for Newton's Third Law.
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• Real World Application

## Rebuilding the Bridge

Learn why knowing physics is important when rebuilding the Bay Bridge.
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• Real World Application

## The Art of Falling

Learn how parachutes help skydivers land safely.
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• Real World Application

## Non-newtonian Fluids

Discover how some liquids behave more like solids.
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• Study Guide