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Newton's Laws

Question

What is the 3rd of Newton's laws?

1 year ago

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104 Replies

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4415 views

R

Reginald Wisoky


104 Answers

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Newton's 3rd law of motion states that when 2 bodies interact with each other, they will exert an EQUAL and OPPOSITE force of the SAME type on each other. This proves the conservation of momentum theory where no momentum can be created or destroyed.

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R
Ronny Achaku

For every action, there is an equal and opposite reaction

A
Abdul Moiz

Newton's third law says: "For every action, there is an equal and opposite reaction." It means that when you push or pull on something, it pushes or pulls back on you with the same force. So, if you push on a wall, the wall pushes back on you just as hard!

A
Adefuye Adetayo Olugbenga

Action and Reaction are equal and opposite or to every action, there is equal and opposite reaction.

A
Aisyah

The third law states that for every action in nature there is an equal and opposite force.

A
Afthab Shiraz

Every force has an equal and opposite reaction force. Keep in mind they act on different objects. Both the forces are the same type (contact or non contact) and have the same size and opposite direction.

C
Chomusaiziva Marashe

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

O
Olagunju Ayodele Joseph

To every action, there is equal and opposite reaction.

M
Mubbashar Rashid

Hi Reginold the third newton law is : For every action there is a equal opposite reaction, :) hope that helps

J
Jahanzeb Hassan

every force of action acting on an object receives an equal and opposite force

S
Seyed Hadi Baghsiahi

For every action, there is a reaction equal and in the opposite direction. Or in detailed response: If object A exerts a force on object B, object B will exert the same force in the opposite direction to object A.

T
Tanya Prakash

Newton's 3rd Law states that when two bodies interact, they exert forces on each other that have the same magnitude but the opposite direction

P
Pete Coyle

For every action (force) there is an equal and opposite reaction (force). That means equal in size/magnitude and opposite in direction. This is the simplest way to remember. For example, if a jet engine pushes exhaust gas backwards with a force of 5,000 N then the exhaust gas will push the engine forwards with a force of 5,000 N.


However there are rules (certainly at A level) that need to be applied to find a Third Law pair of forces:

  1. Act on the same body
  2. Same type of force
  3. Same magnitude
  4. Acting in the same plane
  5. Opposite in direction


As such the reaction force of a book on a table is not a third law pair with the weight of the book. There are a few forces but one pair would be the gravitational force of the Earth on the book (weight of the book) is paired with the gravitational pull of the book on the Earth.


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In simple terms, Newton's Third law states that for every action, there will be an equal and opposite reaction. So whenever two forces interact, they will exert equal and opposite forces to each other. So if you exert a force to push the wall, even if the wall is not moving, it exerts an equal and opposite force to your force to stay in place.

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