Actually when a fly is flying in moving train, it is not touching any part of the train. It is in the space within the train. So I think it is not having the speed of train. But its speed depends on the air within the train. Actually I am not in a position to axplain my doubt exactly. Please understand my doubt and try to answer.
2006-06-21 05:29:38 · 9 answers · asked by sara_swathi m 1 in Science & Mathematics ➔ Physics
If the fly flies in while the box car os still, the doors are shut and the fly doesn't land, the fly will move relative to the outside, not the train. Once the fly lands, It will take the properties of the train as its frame of reference. So, it will move around the box car as if it were still.
If the box car is open, you are "opening" the system, in that the box car is not it's own environment. Turbulence, etc, will affect flight.
2006-06-21 05:37:59 · answer #1 · answered by scott_d_webb 3 · 1⤊ 0⤋
Whenever, we talk about speed or motion, it is with reference to something eg if the speed of a moving train is 60 mph, it is with reference to the stationary objects outside the frame of refence of the train. So a person standing on a platform will see the train moving at a speed of 60 mph. Now if the fly is flying in the train with X mph, then the speed of the fly with respect to the train would be Xmph, but it would be X+the speed of the train with respect to the person standing on a platform outside the train. Remember, eventhough the fly is not touching any part of the train but the air/atmosphere in the train is also moving with the speed of the train, so the fly is also moving even if it sits at some imaginary point in that space of the train.
This is a simple answer to your question. However, for detail study you need to study Kinology and dynamics etc.
2006-06-21 06:03:44 · answer #2 · answered by ali 2 · 0⤊ 0⤋
Your answer in in your question. The fly is not only in the space of the train, it is in the air which is in the space of the train. The walls of the enclosed passenger car keep the air moving at exactly the same velocity as the train itself. Now if you were to have a fly above an open flatcar instead of inside the enclosed passenger car, it would be totally different. In that case the fly would be in air that was NOT moving along with the train, a fact that any person standing on the open flatcar could immediately realize by the wind blowing past him.
2006-06-21 05:47:49 · answer #3 · answered by campbelp2002 7 · 0⤊ 0⤋
the air within the train will be moving at the same speed as the train, assuming all windows and doors are closed (like inside of a car).
the fly, from its point of view, sees the air as stationary, so it's motion within the train is as if it is outside
... which is why its so cool to open one of the windows and see the winds knock the fly around!
2006-06-21 05:37:12 · answer #4 · answered by Tarvold 3 · 0⤊ 0⤋
Actually the fly cannot be at the same speed as the train if it does not sit down somewhere or fly at the same speed.
2006-06-21 05:39:28 · answer #5 · answered by ag_iitkgp 7 · 0⤊ 0⤋
The air inside the train moves along with the train.So the fly's speed is not related to the train's speed.It's speed is just like when it is flying in a stationary place
2006-06-21 05:34:05 · answer #6 · answered by sunil 3 · 0⤊ 0⤋
if the fly is flying in the oppisite direction the same speed as the train, the fly will remain in relatively the same place. flying in the oppisite direction, it will be traveling x kmph plus the speed of the train.
2006-06-21 05:41:46 · answer #7 · answered by Anonymous · 0⤊ 0⤋
It depend on your point of reference, you could describe his motion relative to the train, or you could add the speed of the train to describe the motion relative to a point outside the train.
2006-06-21 05:38:53 · answer #8 · answered by Jeffrey S 6 · 0⤊ 0⤋
Is this a homework assignment?
2006-06-21 05:40:35 · answer #9 · answered by Shank 2 · 0⤊ 0⤋