# Search results

1. ### Inertia, Weight, and Friction

Actually you're right, ice would probably be close enough to be equal but snow... Imagine a small toy car on the snow, it's coefficient would be much smaller then a truck trying to plow through the snow. I'm not sure which would stop first. I think the larger one would still stop later...
2. ### Inertia, Weight, and Friction

You get more friction, and thus more resistive force, but since f = ma and f = xmg (where x is the coefficient and g is the acceleration due to gravity, hence mg is weight force which is also = to normal force) thus ma = xmg and a = xmg/m a = xg deacceleration (choosing the deacceleration...
3. ### A paradox inside Newtonian world

Go into more detail if you really want too, I'm always keen on learning things.
4. ### A paradox inside Newtonian world

So basically transfinite numbers are numbers which are larger then any finite number but smaller then infinity?
5. ### A paradox inside Newtonian world

What does transfinite mean? Boundless but not infinite?
6. ### Effect of force on motion

Reaching the wall is just a way of signifying forward velocity. But other then that Integral is 100% correct. But note he says in the real world. In most of the situations presented in highschool physics (frictionless) a force acting on the ball from the side would not affect the front at all.
7. ### A paradox inside Newtonian world

I mean the center of gravity of the balls themself. If they are touching wouldn't that distinguishe themselves as the same mass? (Touching of course in a pure and abstract method, ie when I hold stuff I'm not touching them directly, I can't get close enough for that, but in this case they are?)...
8. ### A paradox inside Newtonian world

What difference do masses touching have on the center of gravity of the balls?
9. ### A paradox inside Newtonian world

I'm not sure I get your model totally. How big is the space between the center of mass of each ball?
10. ### A paradox inside Newtonian world

What if I go right? Don't they get infinitely big? Unless there is a first ball, if there is a first ball then that changes everything. Edit: To elaborate. If they get infinitely big then the center of gravity is undefined. If there is a first ball, then that first ball feels no gravity force...
11. ### A paradox inside Newtonian world

And the masses approach infinity...
12. ### A paradox inside Newtonian world

If the masses of the ball keep getting bigger and bigger every millimeter and the balls go on forever wouldn't that mean that the center of gravity lies infinitely to the left?
13. ### Effect of force on motion

Velocity is made up of two components perpendicular to each other. Lets say something is moving north-east. The velocity is made up of a North component and an East component. If a force starts acting on the object toward the west then the object's east velocity will reduce, and then go...
14. ### A paradox inside Newtonian world

Where is the center of gravity? Infinitely to the left?
15. ### A paradox inside Newtonian world

Hmm, well I've been told numerous times that infinity amounts of things screws everything up. Not only that but you cannot get "infinity" amount of things so the problem is irrelevant.
16. ### A paradox inside Newtonian world

I think the problem lies in that you cannot have 'infinite balls'
17. ### A paradox inside Newtonian world

Despite there being infinite balls inbetween 1mm and 10/9mm there is a FIRST at 1mm. The first ball would be feeling no gravity from his left. Unless I'm still misunderstanding? Assuming you have an infinite line of balls forever extending so that one always does have a bigger one to the left...
18. ### A paradox inside Newtonian world

I don't get it... Wouldn't the balls move towards Jupiter as well?
19. ### Why is lifting a fast travelling bike harder?

I think so, when you do a "wheelie" (I presume this is what you're talking about) it isn't a straight vertical lift and you would have to go against an amount of force. Even if you DID do a perfect vertical lift (like in the paragraph below) it would still be "harder" (ie take more force) then...
20. ### Free fall scenario

Assuming 100% efficiency then I think it will accelerate at normal g (not factoring in friction, but does 100% efficiency include nil-friction?).
21. ### Projectile weapon-physics

I wouldn't be supprised if getting shot with a gun with bullet proof armor on would knock you back. Impulse from that would be massive since the bullet stops almost immediately in the armor. However getting shot without armor would impart considerably less impulse on the target due to the longer...
22. ### Terminal Velocity of Projectile

He op is just confused about the concept of terminal velocity. Terminal velocity refers to the speed at which the friction from the air is equal to the accelerating force therefore ceasing all acceleration. That situation doesn't apply to a gun firing.
23. ### Terminal Velocity of Projectile

Correct me if I am wrong but terminal velocity has to deal with falling does it not? There is no limit to the speed at which something can travel as long as you have the force to give to it (Other then C of course, and as long as it can survive the friction). Only to which an object can fall...
24. ### Work: Holding something up

You're confusing the physics definition of work with the colloquial meaning of work.