Quote:
On 2001-12-05 10:15, Tim Thompson wrote:
If you look at Newton's F = ma you can see that m is just a proportionality factor between F and a.
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And, as a matter of fact, didn't Newton first formulate the law as force = time derivative of momentum, or f = d(mv)/dt?
Then, when m is assumed constant, it can be taken outside the derivative so f = m*dv/dt which is f = m*a.