Question

Which factor is not needed when calculating the velocity of a satellite orbiting a planet?

A. The mass of the satellite
B. The orbit radius of the satellite
C. The mass of the planet
D. The universal gravitational constant

Answer 1

When calculating the velocity of a satellite orbiting a planet, the mass of the satellite is not needed. The velocity can be derived from the gravitational force acting on the satellite and the orbital radius, which depends on the mass of the planet and the universal gravitational constant.

So, the correct answer is:

A. The mass of the satellite