If I jump up in the air on a moving bus...?
347023
If you jump, you will be moving at the same speed as the vehicle just before you left the floor.\n\nWhen in the air, if the vehicle is accelerating, the vehicle will move forward faster than you and consequently, you will land some distance from where you jumped and vice versa.\n\nIf on the other hand, the vehicle was not accelerating, you will land at the exact place you jumped from. Of course, this is not counting air resistance.
888896
I would pratise on the trampoline..strenghten your legs for higher jumps
113385
Depends on whether the lift has reached its maximum velocity and how good a jumper you are. While the lift is accelerating down, your weight is reduced and hence you would need less jumping energy to jump up to the roof. So your chances of hitting the roof are higher...again, no guarantees since it depends on the lift's acceleration and your jumping ability.
1001400
Drive more often. Work on your jumper... Drive more often.
1152677
Just like how it sounds: The faster you move your arms, the faster your legs will move. This is why my coach always yells, "ARMS!" lol
327812
you would get electrocuted plain and simple...you wouldn't go flying through the air unless it was a really high voltage...I'm pretty sure.
960647
Okay so if you are falling towards the ground the problem is that you are going to have a lot of speed when you hit the ground and that's not a good thing at all.  It is true that you can use your legs to push yourself upwards.  If you could push yourself upwards enough you could reduce your velocity towards the ground or even cancel it out!  So the question is how much upwards velocity can you give yourself by jumping.\n\nSo a little background first.  Say a slingshot fires a ball at 50 m/s.  If you were falling straight down towards the ground at 40 m/s and you shot the ball straight up it would have a velocity of 10 m/s upwards.  How did I get that? I got it because you can just add and subtract velocities like that if they are in the exact same direction (or exactly opposite direction).  I walk left at 5m/s along the ground and throw a ball same way at 6m/s it is then going left at 5ms+6m/s.  Or if I threw it right at 6m/s while walking left it would start with a velocity of (5m/s-6m/s) left which is -1m/s left (that's the exact same thing as 1m/s right).\n\nYou can figure out how much upwards velocity you can give yourself by jumping using this formula:\n\nvf²=vi²+2ad\n\nvf = final velocity, vi = initial velocity, a=acceleration, d=distance\n\nImagine you're standing on the ground while we think about this for a second and that you are great at jumping and you can jump 1 meter upwards.  You start with some velocity vi from your jump and have 0 velocity when you hit the peak of your jump at 1 meter in the air.\n\n0=vi²+2(9.8)(1)\n\nvi=4.4m/s\n\nSo if you are a strong jumper you can give yourself an upwards velocity of 4.4m/s.\n\nNow finally back to the elevator, if you and the elevator fell from a 5th floor at about 15m height you would be going down pretty quickly, almost 20m/s before you hit the ground.\n\nNow if you could jump upwards JUST before hitting the ground you might at best get almost 4.4m/s of upwards velocity and you could subtract that from your downards velocity of 20m/s.  That gives about 15m/s and that is a big problem to hit the ground at that speed.\n\nUnfortunately you wouldn't even do that well because not all of the force you applied to jump upwards would go into accelerating you upwards.  Some of it would go into pushing the elevator downwards even faster so you would gain even less upwards velocity.\n\nThe short answer is you could reduce your speed a little bit but not nearly enough to stop yourself from landing way too hard.
1006314
No.  When you departed the aircraft you body would be travelling at the same speed as the aircraft was travelling.    Wind resistance would slow your body down very quickly but you would still land well ahead of the point in which you jumped out of the plane.
180357
Look it up under "freefall" simulator.\n\nHave fun.\n\n=8-)
1135486
if this is for a school project....your going to the wrong school and you must ride the short bus, or you just plain missed the short bus.
183912
Straight up in the air :)\nStand back
641758
A better question is why do we feel ourselves moving on a lift or bus.\n\nOnly accelerations can be felt, not motion at a constant velocity. Einstein showed that motion at a constant velocity doesn't even have any meaning unless it is measured "relative" to some "stationary" observer, and even "stationary" has no meaning. But enough of that.\n\nEinstein also showed that acceleration is the same as gravity in that they can both be felt, and cannot be distinguished from each other unless you can look out a window. If you are in a closed box with no window, you cannot tell if you in a gravitational field or are accelerating.\n\nWhen a bus is traveling at a "constant" velocity, you in it are actually being accelerated in all different directions all the time as the bus bounces around. If the bus was traveling on a perfectly smooth surface at constant velocity, and had no windows, with no accelerations of any kind, you would not know you were moving.\n\nSame with the lift. You can feel only the accelerations up or down. If the lift is traveling perfectly smoothly at constant velocity with no accelerations, you would feel nothing, except that the pressure in your ears would tell you whether you are going up or down.
790857
well he did jump over a 7 foot guy. so yea thats high. in order to do that u have to be 20yrs or older. and train ur thighs and calf muscles up.
454607
Jump... otherwise you will always be on\nground level.
602572
Well, the air around it isn't moving, quite like it is outside.  So it is able to move around in this air far more capably.  Also, it does get affected by the enertia, but it's so good at flying that it is able to compensate for the difference.  Now if you were to take out all the glass and replace it with mesh you would definately see a difference with the fly.  It wouldn't be able to fight against the current of air around it, and would be forced to the back of the bus, the same would be true for your face.:P
450879
This is the same situation in a train or bus. The answers above are correct. Both you and the coin have velocity relative to the ground right when you throw it up. A similar situation happens when a skateboarder jumps up from his/her skateboard and still lands on the skateboad. Now, the coin would be behind if, while in the air the airplane accelerates which would mean that you would then have a greater velocity than the coin.
743217
Depends on the situation. Most of the time I just jump off and build my wings on the way down