is it possible for a insect to fly freely in a running vehicle?how can it possible?
535111
Sure, why not?  I've had flies and bees flying around in my car many times.\n\nOnce the insect gets inside your car, it becomes isolated from the exterior environment the same way that you and I do.  So the car's interior becomes its new frame-of-reference.  If you manage to move it close to the window and shoo it out, watch it disappear to the rear as the exterior environment becomes its new frame-of-reference.\n\nStraight out of Einstein!
90020
Every object touching and having good grip on the body of the train, move along with the train.This means that every object inside the train moves with the same velocity as that of the train.Accordingly, fly is also moving with the train. It has gained this speed by sitting on the interior body of the train.According to theory of physics, absolute velocity has no effect and diffrence when the frame of reference is within the object.Therefore fly while flying makes two kinds of motion 1) It is moving along with the train 2) it`s flying in its desired directions.The motions (1) & (2) are true to the observer outside the train.But, motion (2) is true to the observer inside the train because the observer inside the train is also moving along with the train.Moreover, When the fly tries to enter the fast moving train from outside the train, then the probability of striking on the panel (wall) of windows is more with respect to the speed of the train.This is because the fly is not in the speed of the train.You might have observed, some of the men on the platform enter the moving train by moving along with the train for some distance and jump into the train. I think this is enough to comprehend.
378959
It could actually help another vechicle, I don't know about a large truck(semi?) but here read this\n\nThis slipstream effect works in the following way. As a single car races around a track, it creates a "bubble" of high-density air in front of it and a bubble of low-density air behind. The difference in the pressure between these two air pockets creates drag, the force that impedes motion. This drag force limits the top speed the car can attain. But if a second car pulls up behind the first, the slipstreams created by the two merge so that the first car losses its aft bubble and the second car loses its front bubble. This effect reduces the drag force each car experiences and both are able to travel slightly faster. \n\nhttp://www.aerospaceweb.org/question/aerodynamics/q0092.shtml
302547
When a vehicle accelerates forward, there is inertia that holds us back until we compensate for it.  The air in the bus also moves forward because it is contained and restrained by the walls, roof, floor, and windows.  The air that the bug is flying in is also first compressed in a backward motion and then stabilized.  Its a good thing, else when the bus moved forward if all the air pooled on the back window then the driver and everyone up front couldn't breathe.  Just as that air exerts an outward pressure upon itself and everything else (if there were no pressure, there would be no wind resistance) that keeps it from collapsing at the back of the bus when it moves forward, the bug continues flying by the same aerodynamics that permits it to fly in the first place.
553787
a bird can fly but a fly can't bird.
160887
The insect is inside the bus, and so is moving 5 mph relative to the bus (that is what you meant right?) so:\n\na. 5 mph\nb. 55 mph, since the insect is moving 5 mph faster than the bus\nc. makes no sense since they are moving relative to each other
1018059
For a while, humans had a firm grip on the aerodynamics of fixed wing flight, and found that those rules didn't correctly explain the aerodynamics of moving bumblebee wings.\n\nNone of which menas that our understanding of flixed wing flight was hopelessly flawed, or that bumblebees fly with the help of tiny angels, or anything like that.  It just means that you can't accurataly understand a phenomena by applying inapplicable theories to it.  \n\nNow , we know the aerodynamics of bumblebees better; specifically, we know the aerodynamics of the small vortices created by insect wings better, so that I believe we do now have accurate hypotheses to apply to bumblebees flight.
509502
A plane can fly until it runs out of gas or conditions cause it to no longer have lift to allow it to fly.\n\nModern planes, however, oftentimes have the ability to refuel during flight as well as avoid conditions that cause it to no longer have lift so its entirely possible for planes to fly indefinitely.
293316
No biggie. I've personally had two cars in the air. \n\nIt just wasn't by choice...
284291
If you could shoot a rocket into outer space with enough force to cause it to leave our solar system, perhaps it would exhibit "perpetual motion" and travel forever.  But that would be deceptive.  It would continue to move unchanged only because it meets little matter or force to overcome.  On earth, to set something into motion you must add to its kinetic energy which equals one half times its mass times its velocity squared.  It doesn't matter how you add the energy (or that it gains more say by falling) we are interested only in the energy you added to create perpetual motion.  It could revolve say suspended above powerful frictionless magnets within the vacuum inside an evacuated bell jar for a very long time.  However, there is no perfect vacuum on earth and there would still be atoms or molecules that would collide with and slow down the rotating item whether that took hours or days or years.  Perpetual motion must last forever(!) without you or Nature adding to its original kinetic energy.  If you hold your hand outside a moving car you will feel wind on your hand and some reasoon it could be harnessed (like a sail boat) to propel the car, neglecting the fact that the wind exists solely because the car is burning fuel.  Out of gas = out of wind.\n\nI would encourage you to pursue your theory for the lessons involved but carefully account for all the energy.  Consult with any engineer (especially mechanical at first) or any physics teacher (professor) and remember that your theory could involve a better use of energy if not perpetual motion.  You must patent most devices within a year of public disclosure (which would not include a witness to your theory or device).  Good luck.
1182585
Technically, depending upon the type of airplane and speed of the head wind, a plane can "hover".  As long as air moves over the surface of the wing fast enough to create enough lift to make the airplane fly, it will fly--it just may not have very much forward speed.\nWhy does an airplane fly?  The Bernoulli principle.  Air flowing around the wing does so at two different speeds due to the shape of the airfoil.  It flows around and over the top more quickly than along the flat bottom of the wing.  This creates higher pressure on the bottom pushing up.  As long as there is enough push to overcome gravity (or weight), the plane will fly. You might ask, then without moving forward and in no wind, how does a helicopter fly?  Well, its airfoils are always moving through the air as long as it is running--the rotors are its wings.
964669
If it has wings it's a "fly"\nIf it doesn't it's  "grounded"!!! \nThat was a cute question. I'd never thought of that....LOL ;o)
1004891
Nope...force is what you are looking to determine.  Force equals mass x acceleration.  The fly would have to travel MUCH faster to have any impact on the train.  Also, the fly, once it made initial contact with the train, doesn't decelerate all at once...parts of it continue moving after other parts stop, and some parts start moving in East and West directions...SPLAT!
47938
The first answer is correct. I think for the second answer, the questioner would probably be wondering...well, if the helicopter takes off with the same velocity as the earth, since the heli is now hovering and the earth keeps on turning, why doesn't the earth spin past the helicopter...\n\nAnd that is simply because the atmosphere is turning around with the heli, like the first answer stated.\n\nJust wanted to elaborate with another example. A fly takes off from the dashboard of a speeding car with its windows closed. Does the fly stay in air or, since the fly is now seperated from the car, does the car rush forward, making it seem like the fly is hurtled to the back of the car?\n\nEven in this case, the air inside the car is being brought along with the car at the same speed. Therefore, the speed of the fly relative to the car will always be 0.
450589
I usually soar without flapping my arms. However, I have found that I have very little control over where I fly. Often, I'm trying to get to a specific place that I cannot reach. I can usually see it, but don't know how to get there. It's usually windy and there is often a lot of resistance to the route I'm trying to take. Only once have I had an uninhibited flight in my dream. It was very exhilarating.
707767
Mathematically it is impossible for a honey bee's wings to support it in flight.\nThe praying mantis is the only insect that can turn it's head.\nScientists still do not know how a cat purrs or where in it's body the noise comes from.
532453
Because it couldnt fly