when youre in an aeroplane and you jump, why dont you move backwards?

Answer 1

This is probably tickie tackie but Im going to go against the grain and say you actually do move back by a most likely immeasurable amount EVEN if the plane is not accelerating because the plane is not a perfect inertia reference frame. This would be true if you threw an object up in your car because the earth is not a true inertia reference frame.

Under newtonian mechanics if the plane were an inertia reference frame and is at constant velocity in a horizontal path, when you jump the horizontal velocity will be that of the planes and does not alter since there is no forces acting on you in the horizontal direction when you are temporarily suspended off the floor of the plane. Vertical velocity is irrelevant for this question. Thus you land at the same spot.because you move with the plane.

However, thats if you are in a inertia reference frame. As far as I know the surface of the earth is not a perfect inertia reference frame since it rotates. Thus imagine if you drop something from the tallest building on earth straight down, although no forces act on the horizontal direction, if a lot of time is required for the object to hit the ground it will have appeared to have moved in the horizontal direction if even no force was applied in that direction initially because the earth rotates some distance during the time frame. This is known as a corriolous effect and is one so called fictitious forces that appear when you are not in an inertia reference frame.

Answer 2

If you jump on the aeroplane when it is on the runway (accelerating) you definitely will find yourself flying to the back of the plane.

In normal circumstances when the plane is flying with a constant speed. You will agree that you are also travelling at the same speed ( Otherwise you won't reach your destination). So When you jump there is no force acting upon you which will
de-accelerate you and you continue to move ahead with the same speed as the aeroplane and you feel you are stationary with respect to the plane.

Answer 3

Actually, you do move backwards; however, the distance that you travel is negligible.

Before you jump, you are standing on the floor. Due to the friction between your feet and the floor (carpet), you and the plane are traveling at the same velocity (direction and speed).

This is true at the moment that you leave the ground. While you are in the air (inside the airplane), the air resistance is not substantial enough to cause any rapid deceleration.

If you were in a large enough airplane, and had a trampoline in the cargo hold, you should be able to notice the movement.

Another example is when a fighter pilot ejects from the cockpit. He is initially traveling forward at the same speed as the aircraft, but the air resistance is greater and slows the pilot rapidly.

Answer 4

You are moving at the same speed as the aeroplane, so ur speed relative to the aeroplane is zero. Its just like jumping on an escalator, u land on the same spot. If you move backwards, this means that ur speed relative to the plane is NOT zero, because u hv horizontal movement, and this would be the result of perhaps a resistive force like wind for instance.

Hope this helps=)

Answer 5

This is a trick question.

If you could look at the plane and the jumping person from the (stationary) ground you would see (jumping or not) the person is on the plane is travelling at the same speed as the plane is. Once you are on the plane and it is moving, so are you.

If however the person jumped in the air at the very same instant as the plane rapidly accelerated forward then they still wouldn't move backwards. They would remain in the same spot, but the plane has moved forward so in relative terms they have moved backwards, but in actual fact they have not moved, the plane has.

Answer 6

you would go backwards - depending on a few things.
1 is it an open top plane (ie will air resistance slow u down)

2 is the plane itself changing speed

if neither of these cases apply (plane or u changing speed) then newtons laws state that u and plane will continue in straight line @ const speed, so long as# no external force is acting on u. in this case u will appear to be moving with plane unless a different external force is acting on u. both subject to same g for eg

Answer 7

Lol I used to wonder this too when I was little. You are in the plane, so you are moving in the same direction and speed as the plane. If you jump, you will still be moving in that direction and speed with the plane so you will land in exactly the same place. Technically, when you jump, you are moving at hundreds of miles per hour with the plane!

Answer 8

Because your body is moving at the same speed as the plane. It's the same if u jump off a train, you have to run along a bit, you don't land dead on where u jumped

Answer 9

plane engines are designed to artwork interior right here way. They pull lots of air interior the front end, then they push it out from the lower back end. They push it out the lower back swifter than they pull it interior the front. for this reason, on the grounds that momentum is defined as mass x velocity, momentum is extra to the bypass by the engine via the potential interior the gasoline and the artwork achieved via the generators. The rules of physics call for that momentum of a equipment would desire to be conserved. for this reason, momentum is extra interior the choice experience to the airframe. This leads to thrust, which strikes the plane forward. it somewhat is like status on a cart and throwing bowling balls off the lower back. The extra you throw and the swifter you throw them, the extra the cart will flow forward. Thrust reversers may well be used to maintain the airflow into the front, yet end or divert the bypass out the lower back. This has the choice result, i.e. it may provide momentum interior the aft direction, offering braking for landing.

Answer 10

at the moment of seperation you have the kinetic energy stored. relatively you do go backwards, and downwards at the same time describing a trajectory, which without a chute would crash you into the ground at 120mph... but your are not powered and therefore become victim to friction, which slows you down, and the chute increases your air resistance...and yo float gracefully to the earth as the plane dissapears into the distance.