How is riding down on a roller coaster similar to being on the International Space Station?

Riding down on a roller coaster and being on the International Space Station (ISS) both create sensations of weightlessness and free fall. On a roller coaster, the rapid descent leads to a brief feeling of lifted weight as gravity pulls the riders down. Similarly, astronauts aboard the ISS experience microgravity, which gives them the sensation of floating despite being in a constant state of free fall towards Earth. Both experiences highlight the effects of gravity and acceleration on the human body in unique ways.