The spacecraft moves around the earth in a circular orbit with a radius of 9000 km. The period of rotation is 9000 s. Find speed.

univerkov | December 14, 2020 | education

There is such a formula: T = 2Pi * r / v 9000 = 2 * 3.14 * 9000 / v We express v Tv = 2Pi * r => v = 2Pi * r / T = 2 * 3.14 * 9000/9000 = 6 , 28 m / s

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