How many second does it take for a skydiver to go from 0 to 60?

Question

Terminal velocity is somewhere around 125 mph, but how quickly does a skydiver go from 0-60?

Answer 1

Since v = g * t, t = v / g.

G = 32 ft/s^2 in fps units, so first convert 60 mph to feet/second:

60 * 5280 (ft/mi) / 60 * 60 (sec/hr) = 88 ft/sec.

T = 88 / 32 = 2.75 seconds, but probably longer since air resistance is significant.

Note to causilist: giving that many digits in your conversion is misleading. You only have two digits in the data so only that many in the final answer (plus placeholder zeroes if it's greater than 99) have any meaning. My answer came out exactly between 2.7 and 2.8, so it's sometimes okay to use the average value in this cases like this.

Answer 2

Under 3 seconds. In 3 seconds, he will be going 96 feet per second, while 60 mph is only 88 feet per second.

Answer 3

9.8 meters a second ... convert into mph/second....
then divide 60 by that number.

9.8 meter/square second = 21.9219757 mile/hour second
(http://www.onlineconversion.com/acceleration.htm)

so every second the speed increases by 21.9219757 mph

60mph / 21.9219757 = 2.7 seconds

bout as fast as a new yamaha R1 1000cc motorcycle :)

this is not counting air friction... im assuming your not factoring in areodynamic coefficients etc.

Answer 4

0-60 what

if it is m/s then about 10 seconds

Answer 5

if it's from a high altitude, which has low air density, a little over 2 seconds. btw terminal can reach 200mph.