Scientists measure the acceration of gravity at the Earth's surface area at 32 feet per next squared! That means the longer an object is free falling the greater It is speed increases (not accounting for air resistance). Check out centripetal force by designing and building a mini roller coaster and https://physics-topics77417.thezenweb.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-velocity-one-turtle-beach-54652067