The spacecraft is approaching the Moon. At a great distance from the Moon, its velocity relative to it was zero. At what height do you need to turn on the brake engine, which creates a five-fold overload (5g), so that the landing is soft? Ignore the change in the ship's mass. The moon has a radius of about 1,700 km, and the acceleration of gravity on its surface is 6 times less than on the Earth's surface.