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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: Early math
Topic ID: 35
Message ID: 1
#1, RE: Newton Smewton
Posted by alexb on Dec-18-01 at 09:00 PM
In response to message #0
>Hi I've been told that Newton's 3rd law says that every
>action has an equal and opposite reaction.

You should not rely on hearsay. You can do some reading too.

>How then does
>anything move? I mean that if say something pushed to the
>right with such a force then an equal force shall push back
>to the left and cancel things out, including the movement or
>displacement. hmm. The situation is identical from any
>angle. Is this a paradox? Probably not because i'm typing
>this! (or am I? ha ha)

Right. This is a good thought. It's a pity you did not stop to ponder it. To give you another chance, I'll type my answer way below.

>PS My engineering teacher just laughs when I try to explain
>it to him. Is he mad or am I?

I do not know. Have you seen your psychiatrist lately?


 

 

 

 

 

 

 

 

 

 

 

 

 


The action and reaction act on different bodies. When a billiard ball bumps into another one, it stops, because of the reaction of the latter that starts moving, because of the action of the former.