6/3/2023 0 Comments The moon has no gravity![]() ![]() This means that the ground is curving away from you in every direction. The reason why they don't eventually hit the ground is that while they are falling downwards, they are also moving very quickly forwards. We say that things in orbit are in a free fall. In fact, both the astronauts and the space station and all other things in orbit are constantly falling in exactly the same way as a rock falls to the ground when you drop it. The object is still moving along at thousands of m/s but now with a tiny bit less or more velocity or direction from the influence of the astronaut accelerating it. In the bigger picture, the object is moving along with the shuttle at thousands of m/s but the added velocity of the force on the object deflects its velocity relative to the shuttle. That is why when you see an astronaut nudge an object within the shuttle capsule, the object keeps on its path without changing direction or velocity. Without any other force acting upon the shuttle or anything inside, nothing will appear to move relative to anything else. As soon as the rocket propels them to their final speed, everything inside the space shuttle is traveling at that same velocity. The space shuttle is doing the same thing that you are on that carnival ride except they are traveling much much faster and in very less dense air. The motion is all chaotic because of the density of the air around you influencing the penny on its way down. If you put a penny on your knee and fall with it, the penny appears to be floating in front of your face. Have you ever went on the demon drop or one of those rides where you free fall for a couple seconds.
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