What is called the first cosmic speed?

The first cosmic speed is the speed that must be imparted to the body so that it begins to move around the Earth in a circular orbit near its surface only under the action of the Earth’s gravitational attraction.

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.