What is the orbital velocity of a 100-kg satellite orbiting at an altitude of 1000 km above the surface of the Earth?

Question

Quizplus · Accepted Answer

We can use the formula for orbit velocity: 
V = √(GM/r)
where G is the gravitational constant, M is the mass of the Earth, and r is the distance from the center of the Earth.

Plugging in the values, we get: 
V = √(6.674 × 10^(-11) m³/(kg·s²) * 5.972 × 10^(24) kg / (6,371,000 m + 100,000 m))
V = √(3.986004 × 10^14 m²/s²)
V = 7,356.78 m/s

Rounding to the nearest ten, the answer is B: 7360 m/s.

What Is the Orbital Velocity of a 100-Kg Satellite Orbiting