MC22 Posted August 9, 2013 Share Posted August 9, 2013 A car in space Link to comment Share on other sites More sharing options...
AwesomeMcCoolName Posted August 9, 2013 Share Posted August 9, 2013 A car in space Can be moved, also not weightless as there is still gravity in space, just far far less as you're not usually near any planetary bodies. Link to comment Share on other sites More sharing options...
@@@@@@ Posted August 9, 2013 Share Posted August 9, 2013 but where that space is, is there gravity? Link to comment Share on other sites More sharing options...
Alex From Security Posted August 9, 2013 Share Posted August 9, 2013 If you are in a complete vacuum, there is no possible way to move anything unless it is right beside you, and after moving it you would just fly away in the opposite direction. Link to comment Share on other sites More sharing options...
MC22 Posted August 9, 2013 Author Share Posted August 9, 2013 Can be moved, also not weightless as there is still gravity in space, just far far less as you're not usually near any planetary bodies.well, true.but where that space is, is there gravity?I was thinking of a hypothetical perfectly 0 g space.If you are in a complete vacuum, there is no possible way to move anything unless it is right beside you, and after moving it you would just fly away in the opposite direction.yay for 3rd law. Link to comment Share on other sites More sharing options...
ThatOtherChigga #Mack Posted August 9, 2013 Share Posted August 9, 2013 push the car Link to comment Share on other sites More sharing options...
♠Derpeh♤ Posted August 9, 2013 Share Posted August 9, 2013 Technically there is no such thing as "no gravity" anything with mass exerts it's own gravity. Though it is to a much smaller extent to earth we all have our own gravity. So technically the car in space would have it's own gravitational pull. Link to comment Share on other sites More sharing options...
There Posted August 9, 2013 Share Posted August 9, 2013 Can't you just push the car? You'll move in the opposite direction (3rd law, as you said), but the car will move too, right? Link to comment Share on other sites More sharing options...
MC22 Posted August 9, 2013 Author Share Posted August 9, 2013 Can't you just push the car? You'll move in the opposite direction (3rd law, as you said), but the car will move too, right? Let me restate my conjecture, or whatever it is An object with near infinite mass is slowly moving towards you, and is going to crush you into a 3rd object. Assume your manpower is not superhuman. Link to comment Share on other sites More sharing options...
There Posted August 9, 2013 Share Posted August 9, 2013 Let me restate my conjecture, or whatever it is An object with near infinite mass is slowly moving towards you, and is going to crush you into a 3rd object. Assume your manpower is not superhuman. Since when does a car have near infinite mass? Lol. Link to comment Share on other sites More sharing options...
cleverpun Posted August 10, 2013 Share Posted August 10, 2013 Let me restate my conjecture, or whatever it is An object with near infinite mass is slowly moving towards you, and is going to crush you into a 3rd object. Assume your manpower is not superhuman. If you're in space then the mass of the object wouldn't matter, would it? Link to comment Share on other sites More sharing options...
MC22 Posted August 10, 2013 Author Share Posted August 10, 2013 If you're in space then the mass of the object wouldn't matter, would it? Well, yes you'd instantaneously explode, but I meant with like a spacesuit or something. Link to comment Share on other sites More sharing options...
There Posted August 10, 2013 Share Posted August 10, 2013 I don't understand physics or math or anything, I'm an idiot, but if the object had near infinite mass, wouldn't it form a black hole? Link to comment Share on other sites More sharing options...
cleverpun Posted August 10, 2013 Share Posted August 10, 2013 Link to comment Share on other sites More sharing options...
There Posted August 10, 2013 Share Posted August 10, 2013 Aaaaaaaand I just wasted 2 hours watching minutephysics. Link to comment Share on other sites More sharing options...
MC22 Posted August 10, 2013 Author Share Posted August 10, 2013 Aaaaaaaand I just wasted 2 hours watching minutephysics. This Link to comment Share on other sites More sharing options...
~shenanigans Posted August 11, 2013 Share Posted August 11, 2013 I'm not sure what your question was. If a car is coming at you with a large velocity in space, when it impacts with your body, you will still feel an impact. The car will change velocity as well. This is the definition of inelastic collision, where an object with initial velocity impacts a second object with zero velocity. Kinetic energy of the car before the collision and after the collision is not conserved, since some of that energy has turned into heat energy of your body ripping. Nothing can be "unmovable" because that would mean it needs to have infinite mass, and infinity is just a concept. In the physical world, things have finite mass, which means anything can be moved, even if it is by a very tiny amount. F=ma, thus any force upon a mass will cause a proportional acceleration. Link to comment Share on other sites More sharing options...
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