The speed to let the rocket enter the orbit is ...

vI = 7,91 km/s
vII = 11,19 km/s
vIII = 16,7 km/s
Depends on the weight of the rocket
And cosmic velocity - also referred to as the circular velocity, it is the speed that should be given to the body to enter into orbit around Earth. If a rocket launches from the surface of the earth, then it has to get at least 7.9 kilometers per second to get into orbit.
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Answers by country

vI = 7,91 km/s
vII = 11,19 km/s
vIII = 16,7 km/s
Depends on the weight of the rocket
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flagAustralia
52%
21%
21%
5%
19
flagIndia
49%
28%
6%
16%
81
flagGreece
40%
20%
13%
26%
15
flagAustria
33%
25%
16%
25%
12
flagthe United States
29%
32%
19%
19%
31
flagPoland
17%
33%
15%
33%
4890
flagGermany
20%
31%
18%
28%
88
flagthe United Kingdom
20%
20%
33%
20%
15