The inhabitants of the future had a desire to get rid of the moon with its constant ebb and flow. What additional speed must
The inhabitants of the future had a desire to get rid of the moon with its constant ebb and flow. What additional speed must be given to the Moon in order for it to leave Earth?
The moon revolves around the Earth in an almost circular orbit, that is, its speed (about 1.02 km / s) is close to the first cosmic speed for a given distance from the Earth. To leave the Earth, the Moon must have a second cosmic velocity, 1.41 times greater and about 1.45 km / s, that is, in order to implement their fantastic idea, the inhabitants of the future will have to give the Moon an additional speed of 0.43 km / s.
Of course, if you do not set the task of taking the Moon away from the Earth with a single impulse, then the engine thrust can be much less. But this already deserves a separate discussion.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.