Posted by lisa on Friday, July 12, 2013 at 10:17am.
The function gives the speed in feet per second (ft/s) of a freefalling object after it has fallen x feet (ignoring air resistance). FInd the speed of the object after it has fallen 25 feet. If necessary, round your answer to the nearest tenth.

algebra1 HELP PLEASE Thanks you!!  Reiny, Friday, July 12, 2013 at 12:51pm
time t fall 25 ft
16t^2 = 25
t^2 = 25/16
t = 5/4 seconds
v = 32t
so after 5/4 seconds, v = 32(5/4) = 40
the object is falling at 40 ft/sec