Suppose the Moon is 383 thousand km from Earth, and its orbital period is 27.2 days. What is the Moon's speed in km/hr for this orbit?

Answer 1

As we know:

Perimeter of a circle is 2πR

V= x / t or V= (2πR)/ (27.2 days) → V=(2π×383000 km) / (27.2 × 24 hours) → V = 3684.4 km/h