# Thread: Kind of an interesting question

1. If im in an Airplane, at cruising altitude...and I get up out of my seat and JUmp up to touch the ceiling of the plane, why dont i fly to the back of the plane because im not making contact with the plane for a few seconds but the plane is going 500mph? .THis goes same if you throw a ball up in a car..Argh its hard to word but I hope you understand

im not sure if its the right board sry

2.

3. think this should be physics
its becuase you already have the same speed as the airplane. and since it doesnt decrease in speed you will land on the same spot, of course if it stops you will hit its wall

4. Just to elaborate further on Zelos' answer...

You, the ball (in the car), the airplane, and the air in each vehicle are all moving at the same speed. If there were such a thing as a top-less airplane and you jumped without any sort of restraint, your maximum velocity (?~160 for humans?)-where the forces on you (intertia) equal the drag (caused by the air whipping around you)-would make you fly back. However, because there is no drag in an airplane which is sealed because all the air is moving at the same speed, you land at the same place you jumped from.

If the airplane were to suddenly stop while you were in the air, you would be in trouble.

-Ajain

EDIT: on a side note, if inertia didn't allow for us to land in the same place when we jump in a moving vehicle, jumping while standing on the earth would be devestating because the earth is moving a number of ways.

5. thank you ajain. when the plane stops you would have to go and buy asprin for the biggest headache in the known history

6. Actually if the plane is accelerating you would land a little bit back from where you jumped from. The same would be true if it were decelerating, you would land a little bit forwards (or just fall on your face). Assuming your facing toward the front of the plane.

At a constant velocity you would not notice the movement. Constant being not interfered with by turbulence and such.

7. Indeed. It just comes to show that there really is no difference between standing still and moving along at the same pace. Indeed, movement itself is illusory, because it is only relative to another object. In a completely empty universe - save for ourselves - we would not know whether we were moving, nor would we care to determine, because there would be no object to move relatively from and the question would become superfluous.

In this, the statement 'everything moves' becomes both absurd and incredibly important. Absurd because movement is no longer a property of any one atom or particle, but a relation between two subjects and any sole object does not move. Incredibly important because we are forced to look at relations and a greater, grander picture. Indeed, to even understand movement we are forced to consider other forces and particles and in this we open ourselves to compassion and love for all men and women of all walks of life. :|

Mr U

8. Thanks for the answer guys

ALso how does a plane travel east to west when earths rotatin on its own axis is around 1000mph and airplane travel 500mph?

9. Originally Posted by Reality

ALso how does a plane travel east to west when earths rotatin on its own axis is around 1000mph and airplane travel 500mph?
Well I suppose in some situations if the plane was viewed from space from a position not synchronous to the earth it might appear to be not moving or even going backwards relative to the fixed position in space, or it might appear to move much faster. Still relative to the surface of the earth 500 mph is still 500 mph. The rotation of the earth does not impact this. Viewed from space, that's another story.

10. As a related example of this I once crossed the Atlantic at a groundspeed that was supersonic - and no, it wasn't Concorde, but a bog standard 747. We simply had the advantage of a 250 mph tail wind. Combined with an airspeed of over 500 mph we made pretty good time!

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