How long will it take a skydiver to fall 1000 at terminal velocity?

How long will it take a skydiver to fall 1000 at terminal velocity?
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Terminal velocity, if you are flat toward the ground is about180 feet per second; so time is distance/speed = 1000 feet/180 =5.5 seconds. If you roll up like a ball terminal velocity may be ashigh as 280 feet per second. and time would be about 3.5seconds.
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