G-force, or gravitational force, measures the force or pressure you experience in relation to normal gravity on Earth. For example, when you’re standing still, you’re experiencing 1G, which is the typical pull of gravity. However, if you’re in a fast car or on a roller coaster that accelerates quickly or makes a sharp turn, you might feel like you’re being pushed into your seat—this extra sensation is the result of increased G-force. For instance, 2 Gs would feel like having twice your body weig