Newtons third Law question?

Question

Newtons third law is often called the action-reaction principal. Exactly what does this refer to?

Answer 1

www.google.com

Type in the box "Newton's third law" and click on the SEARCH button.

Answer 2

I'm not an expert or anything but i'm pretty sure it refers to kenetic/potential energy. There are alot of specifics and theories that sprout from this law but basically it's this. every action has an equal and opposite reaction. For instance, in real world practice, when you hit a nail with a hammer the nail is driven into a substance (typically wood) based on the amount of force you hit it with and at what angle. If hit at a 180 (perfectly straight) angle with 30 psi you would drive the nail through aproxamatily five inches of wood. another more relatable, yet less practical example would be a roller coaster. roller coasters convert the potential energy of the ride car into kenetic energy. the action placing x amount of weight at y altitude. the reaction, that weight falling relitive to the local gravity. there are probly several other examples that could explain this better, I just can't think of any right now.

Answer 3

its always tricky to understand this 3rd law but think about it practically...

standing on the ground... you are pushing against the floor... if the floor wasn't pushing you, you'd simply fall straight through. action=you pushing the floor to stand, reaction= floor pushing you.

push your fingers against the wall (so they bend slightly) all my teachers used this example to demonstrate this law.

instead of thinking about the "speed" think about the forces... thats the key to Newtons Laws (all 3). If your asked to look at a situation remember all 3 laws interlink... (1st law is similar to 3rd etc)

Answer 4

for every action there is an equal reaction.

Answer 5

It means that when two objects are in contact (let's call them A and B), the force exerted on A by B (it must be by object B) is equal to the force exerted on object B by object A.  You absolutely must have two objects in contact, and the reaction is always on the opposite object fro one object.  An example that can clarify this is when you're standing on the ground.  The earth is exerting a force on you.  But you are exerting the same force on the earth.  This is newtons third law, and it's one of the most commonly misused and wrongly taught laws of motion.

Answer 6

You ask a question   -       Action

You get replies          -       Reaction.

You irritate somebody  -   Action

You get a slap               -   Reaction

You help somebody cross the road    -   Action

He says 'thank you'                               -   Reaction

Newton's third of law of motion is "For every action there is an equal and opposite reaction".

Like you sit on a chair -  butt applies downward pressure and the chair surface applies upward pressure - and hence you sit.

Like I reply to your question  -  Action

You give me ten                     -   Reaction for lol!

Enjoy Newton's law.

Have a nice day.