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it's all about newto'ns law

2006-08-29 21:37:08 · 5 answers · asked by leny 1 in Science & Mathematics Physics

5 answers

A very simple question.. and a lot of crazy replies about relativity and unconnected stuff.

F=MA thus

A=F/M

So to answer your question.. the bigger the mass the slower will tbe the acceleration for a given force.
"Inertia" is just the tendency of a body to keep its state, to change a body's state you need a force, that generates an acceleration.. thus.. we go back to the same A=F/M.. the bigger the mass the bigger the apparent inertia of a body.

Consider a car of 1200Kg and a race car of 600Kg with the same engine.. the 600kg will accelerate twice as fast than the 1200kg car... roughly, cause there are thousands of other factors involved.. but u get the idea.
If you think of intertia as the tendency to keep a speed and think about those 2 cars.. the 600kg will brake twice as fast than the 1200kg car... half weight (mass), half inertia.

2006-08-29 23:04:33 · answer #1 · answered by kunosayu 2 · 0 0

With the F = M A equation of Newton's laws, we can calculate the relationship between force, mass, and acceleration. But if you ask why (as my granddaughter does constantly), I realize that I have no answer. What is it about matter that makes this true?

Worse yet, as you accelerate an object to nearly the speed of light, this equation seems to no longer hold. Special Relativity says that the mass increases. But how?

Scientific theories let us make predictions about how things behave even when we don't understand how things really work.

2006-08-30 05:35:38 · answer #2 · answered by Frank N 7 · 0 0

Hello,

Newtons 2nd law put F=ma the equation which i believe will get obliterated once we get to know that there is nothing called as mass, its all energy.

I know it sounds vague but if you see recent research shows that mass is not mass at all its 95% energy, and i am sure as we probe deeper it will be all 100% energy, with that fact what we are saying is that there is nothing called mass, its only energy in a form.

On a different note look at the transfers, look at evolution its only changed state of energy, masses have inertia, they cant evolve.

The 1st law talks about inertia; i would suppose that if we dig deep we would see that mass is a transitory concept, and there is nothing which is at rest, and yes in that ways there is nothing called inertia at least if one was to look at larger time scales or in a deeper way.

In a way my answer is there is nothing called as mass and law of inertia is a concept that will crumble with time.

2006-08-30 05:09:11 · answer #3 · answered by himxman 1 · 0 0

the object whch has a greater mass than the other and collided whch each other and Both of them are accelerating the same speed. of course the one that has a lesser mass will be thrown away.

2006-08-30 04:53:50 · answer #4 · answered by Alien_X-skywalker 2 · 0 1

By the state of the mass in its weight and contributing friction.

2006-08-30 04:47:01 · answer #5 · answered by wacky_racer 5 · 0 2

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