f=ma.have any proof of this newtons law.?

Answer 1

Newton advanced it as an axiom, by virtue of which it wouldn't be "proven", only tested (the resulting predictions tested.) If I say "suppose I assume a space where all parallel lines converge", I don't "prove" my assumption - it's an assumption. You work outward from it and see what you get. If what you get is impossible (or wrong), it was a bad assumption.

Answer 2

It is an empirical equation, derived from and verified by experimental data only, no mathematical derivation could ever prove it. As such the only proof I can give is the orbits of the planets, the motion of your car when you hit the gas, airplanes flying, wind blowing, birds chirping etc.

Answer 3

the user-friendly answer isn't any. we don't have direct evidence that the actual regulations and constants do no longer replace by making use of increments or by making use of quantum leaps. We make that assumption with the aid of fact it simplifies all our calculations. there have been huge holes in cosmology formerly; Hubble, as an occasion. Edwin Powell Hubble, born in Marshfield Missouri in 1889, have been an astronomer and cosmologist. His observations making use of the one hundred-inch refelcting telescope on the Mount Wilson Observatory-- considering the fact that Hubble's death in 1953 re-named as between the Hale Observatories-- interior the early component of the twentieth century tended to substantiate the theory of the increasing universe. Or so all of us had concept. an prolonged time later, a youthful student reviewing Hubble's writings for a learn paper had double-checked his figures and made the staggering discovery that Hubble had forgotten to divide an equation by making use of two. the consequence replace into that the universe, in accordance to the main suitable archives the scientific worldwide's instrments have been able to gathering, replace into in user-friendly terms a million/2 as previous as all of us had concept it replace into. at the same time as this looking replace into of little or no useful importance to people's each and every day life-- ten billion years previous, twenty billion years previous-- it replace right into a source of chagrin to the astro-physicists. That one in all those significant errors had remained undiscovered for as a result long, that there replace into some thing that should throw their theories into doubt, that they may be incorrect! luckily for the found out pupils, inertia-- the psychological and organizational sort-- saved people thinking of them as extra knowledgeable than the traditional guy, and to be relied on. yet each and every honest guy of technology replace right into a sprint extra careful after that, and alwasy puzzled, "What else have we missed...?"

Answer 4

Hrmm how about a baseball bat hitting a ball. The faster you swing the bat, the more force will start the ball moving.

Or here's another....
Walk into the wall vs run into the wall. Which way will you end hitting the wall with more force?

Answer 5

I think it's derived from the Lagrange equations.
Also of note: technically force is the derivative of momentum (mv). Because we can usually assume that mass remains constant, you get the value ma, but if it isn't (e.g. a rocket that is consuming fuel) you have to add a term that is change in masss times the velocity.