Question

If a spacecraft is to escape the earth's gravitational force to travel to the outer space,it must have minimum velocity of.......................


a)12.2km/s
b)11.1km/s
c)11.3km/s
d)11.2km/s​

Answer 1

Option D is Correct.

The minimum velocity of the spacecraft to escape the gravitational force is 11.2 km/s.

What is Escape Velocity?

The minimum velocity required to escape the gravitational pull or influence of a Body like Earth or the Moon is known as an Escape Velocity.

• The formula to calculate the Escape Velocity is

                             $V_{c} =\sqrt{\frac{2GM}{r} }$

      Here V is the escape velocity, G is the gravitational constant, M is the mass of the body like a Planet or a star and r is the distance of the object from the center of the body.

• For example, the escape velocity of Jupiter is 61 km/s.

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