The velocity with which a projectile must be fired so that it escapes earth’s gravitation does not depend on
Text Solution
Verified by ExpertsThe correct answer is:
B
For a projectile to leave the gravitational field of the earth, its kinetic energy would be at least
equal to its potential energy.
That is 
where 
is the universal gravitational constant,
is the mass of the earth and
is the radius of the earth.
Hence the escape velocity of a projectile is independent of its own mass.
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