Question

The escape velocity of a body on the surface of the earth is 11.2

Answer 1

Answer:

The escape velocity of a body from earth is about 11.2 km/s. Assuming the mass and radius of the earth to be about 81 and 4 times the mass and radius of the moon, the escape velocity in km/s from the surface of the moon will be: A .

Answer 2

Escape velocity of a body (ve) = 11.2 km/s; New mass of the earth M'e = 2 Me and new radius  of the earth R'e = 0.5 Re.

=> (a) 22.4 km/s