Suppose the satellite is moving at 3 km/3 in a geosynchronous orbit.Which would require the greater change of speed-slowing so as to fall to Earth or speeding uo to escape from Earth?
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机译：假设卫星在地球同步轨道上以3 km / 3的速度运动，那么哪个需要更大的速度变化才能落到地球上或加速uo逃离地球？
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