<P> Based on wind resistance , for example , the terminal velocity of a skydiver in a belly - to - earth ( i.e. , face down ) free - fall position is about 195 km / h ( 122 mph or 54 m / s ) . This velocity is the asymptotic limiting value of the acceleration process , because the effective forces on the body balance each other more and more closely as the terminal velocity is approached . In this example , a speed of 50 % of terminal velocity is reached after only about 3 seconds , while it takes 8 seconds to reach 90 % , 15 seconds to reach 99 % and so on . </P>
<P> Based on wind resistance , for example , the terminal velocity of a skydiver in a belly - to - earth ( i.e. , face down ) free - fall position is about 195 km / h ( 122 mph or 54 m / s ) . This velocity is the asymptotic limiting value of the acceleration process , because the effective forces on the body balance each other more and more closely as the terminal velocity is approached . In this example , a speed of 50 % of terminal velocity is reached after only about 3 seconds , while it takes 8 seconds to reach 90 % , 15 seconds to reach 99 % and so on . </P>
how far does a human fall in 3 seconds
how far does a human fall in 3 seconds
about 195 km / h ( 122 mph or 54 m / s )
about 195 km / h ( 122 mph or 54 m / s )