HSC Physics Practice Questions - HSC Physics (NSW Higher School Certificate, Year 12) Exam

Which statement correctly describes the escape velocity from the surface of a celestial body?

It depends on the mass of the launching projectile. It is the minimum velocity needed for an object to escape the gravitational field without further propulsion. It is equal to the orbital velocity of a low-Earth orbit satellite. It increases when the radius of the planet increases for a constant planetary mass.

Correct Answer:

It is the minimum velocity needed for an object to escape the gravitational field without further propulsion.

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