Compared to Earth's gravitational force on the space shuttle when in orbit, the force on a shuttle astronaut is: a) the same because both are orbiting at the same speed.
b) less because the astronaut has less mass than the shuttle.
c) more because the shuttle was built to orbit, but the astronaut was made to be on Earth.
d) the same both are zero because there is no gravity in space.
e) less because the shuttle pulls him around in orbit.