Astronauts on the orbiting space shuttle are weightless because... a. there is no gravity in space and they do not weigh anything. b. space is a vacuum and there is no gravity in a vacuum. c. space is a vacuum and there is no air resistance in a vacuum. d. the astronauts are far from earth's surface at a location where gravitation has a minimal effect.
The Big Misconception "Doesn't a massive object accelerate at a greater rate than a less massive object?".
Falling and Satellite Motion What does falling have to do with keeping a satellite in orbit?
Satellite Motion What if there where no gravity?
Falling into the Earth A satellite does fall towards the Earth; only it never falls into the Earth.