
#1
Feb1413, 12:36 PM

P: 21

Hi all,
It is really a history question. I read that Galileu developed the concept of inertia, but today I knew it from Newton's 1st law. So my question is: Both of them arrived at the idea independently? Was Newton aware about Galileu's work and used the law because it is the basis for his 2nd law F=ma? Thank you, 



#2
Feb1413, 03:34 PM

Mentor
P: 10,766

Every human, independent of the precise definition of that word in terms of our ancestors, discovers this concept before he/she learns a language.
Galileo and Newton just made them more accessible to a quantitative analysis. 



#3
Feb1413, 03:38 PM

Sci Advisor
P: 5,935





#4
Feb1413, 03:44 PM

Mentor
P: 10,766

Who was the creator of principle of inertia 



#5
Feb1413, 04:56 PM

P: 860

Galileo's notion of inertia seems to have been that bodies in circular motion keep going at constant speed. Descartes seems to have been the first to state that a body maintains its velocity (i.e. speed and direction) unless acted upon by an external force. It's stated, for example, in his 'Meditations' of 1642 (the year Newton was born).



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