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Let's say you were sitting on a bus and throwing a ball up. The ball would then fall directly down to your hand. Why wouldn't the ball fall back from you? Now you were throwing the ball forward at a speed a lot less than that of the bus, it would then hit the front of the bus and fall down. Why wouldn't the ball fall before hitting the front of the bus? The answer to these questions is because you and the ball are moving at the same speed with the bus. Doesn't matter how high you threw the ball upwards or how fast/slow you threw the ball forwards, it would not fall backwards. Same with airplane, wind direction and speed will speed up or slow down your airplane. Not the Earth's rotation because you and airplane are already moving at the same speed with the Earth in space.