Now, let's imagine that same astronaut in orbit aboard the space station, orbiting at an altitude (height above the Earth's surface) of 400 km. We first need to find the astronaut's distance to the center of the Earth.
What is the altitude expressed in units of meters?
400 km = ✓ Correct. 1 km is 1000 m. m
The radius of the Earth is 6.37 ✕ 106 m. What is the total distance (in m) from the center of the Earth to the astronaut?