Question

find the expression for the escape velocity of a body when projected from the surface of the Earth.​

Answer 1

Answer:

The acceleration due to gravity (earth), g = 9.8 m/s2. The radius (earth), R = 6.4 × 106 m. The escape velocity (earth), ve = √2 × 9.8 × 6.4 × 106. Therefore, ve = 11.2 × 103 m/s = 11.186 km/s or 11.2 km/s (Approximately).

Body: Escape Velocity in Km/s

Earth: 11.2 km/s

Moon: 2.38 km/s

Sun: 618 km/s

Explanation:

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