What is the escape velocity of a satellite launched from the earth’s surface? (Take g as 10ms\(^{-2}\) and the radius of the earth as 6.4 × 10\(^6\)m)
V\(_e\) = \(\sqrt{2gr}\)
V\(_e\) = \(\sqrt{2 \times 10 \times 6.4 \times 10^6}\) = 11.313km/s
The escape speed from Earth's surface is about 11.186 km/s
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