When you are inside a moving train or bus, you are moving at the same speed as that train or bus, and you have the same momentum, so even when you jump, and are no longer in contact with the floor, your existing momentum will carry you along with the vehicle, under normal circumstances. If you happen to jump at a time with the train or bus is changing the speed or direction of its travel, however, you will find that you do not stay in the same place, with respect to the train or bus. You need to have solid contact with the vehicle for its own changes of motion to alter your own motion.
The answer is based on Galilean interial frames. If you are standing on a (non-accelerating) platform moving at a constant velocity, it is physically identical to standing on a still, non-moving platform. The sum of the forces acting on you (remember force = mass x acceleration) is the same in both cases.
When you jump in the air, you already have the same momentum as the spot you jumped from because you and the earth are moving together. The Earth's rotation doesn't affect your jump because the atmosphere moves along with the Earth as well.
Before you step off of the train, your body is moving past the walkway at the same speed as the train. Its natural tendency is to keep moving in the same direction at the same speed, but once you step onto the walkway, that means your body wants to move along the walkway at the speed of the train. You have to slow your body down gradually, which you can only do by deftly manipulating the contact between the walkway and your feet. If you stepped off and expected to just stand there, your feet might stay on the walkway, but the rest of you still needs to keep going at the speed of the train, resulting in a phenomenon known as "falling down".
No, a body cannot be at rest and in motion at the same time in the same frame of reference. This is known as the principle of relativity in physics, which states that an object cannot have multiple velocities at the same time in a single reference frame.
Both trains will reach the starting point at the same time since they are moving in opposite directions on the equator, which forms a complete loop. The distance traveled by both trains will be the same, so they will meet at the starting point simultaneously.
No, you will continue to move at the same speed as the train, so you will not end up further back in the train. Your position relative to the train will remain the same.
No, you would not land in the same place since the train is moving. Your horizontal velocity would be combined with the train's velocity, affecting your landing position.
While you are moving, jump (wile moving). Once you land jump again (still moving same direction). Jump one more time exactly as you land (while moving in the same direction) to do the triple jump and get a little higher.
The only consonant to appear in both words "moving" and "train" is "n".
You will land in the same place relative to that vehicle, provided that vehicle is going at a constant speed in a constant direction. You can try this on a train. Make sure you try it when the train is not speeding up, slowing down, or going around a corner. Jump as high as you can, and you should land in basically the same spot on the floor of the train. But if you do it while looking out the window, you will see that you are still passing objects. This is because of inertia, described by Newton's first law. "An object in motion will remain in motion unless acted upon by a net force." So with no wind inside the train, and no-one pushing on you, you will land on the same spot on the floor of the train from which you jumped. Source: http://en.wikipedia.org/wiki/Law_of_inertia
the passenger will be at rest relative to the rear car of the train, as they are both moving at the same speed and direction.
The passengers reference point ! The passengers are moving at the same speed as the train.
While the car and train may be moving at the same speed, their kinetic energies can be different because kinetic energy depends on both the mass and velocity of an object. The train typically has a much larger mass than a car, so even if they are both moving at the same speed, the train will have a greater kinetic energy due to its higher mass.
The answer is based on Galilean interial frames. If you are standing on a (non-accelerating) platform moving at a constant velocity, it is physically identical to standing on a still, non-moving platform. The sum of the forces acting on you (remember force = mass x acceleration) is the same in both cases.
if you train him to.
Yes and no. All motion is relative. When you say you are moving you mean in relation to something else. If are on the train and you choose something that moving alongside you at the same speed (another train for instance) then you are not moving relative to that, however you are moving in relation to the countryside. Both trains are moving in relation to a cow in the field.
This sounds like a joke question. If you toss a coin in a train, it lands in the train. If you toss it out the window, or otherwise off the train, it lands on whatever is out there. On the other hand, assuming this is not a joke, the coin will land where it would if you tossed it if the train were stationary. In other words, the coin is moving at the same velocity as the train before the coin toss, and since that part of its momentum is preserved through the toss, it will land, relative to the train, in the same place. This assumes, of course, that the train is not changing speed during the coin toss, that the windows are not admitting a wind, and so on.