SOLUTION: The height of a projectile fired upward is given by the formula s = v0t − 16t2, where s is the height, v0 is the initial velocity, and t is the time. Find the time for a proj

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Question 1173184: The height of a projectile fired upward is given by the formula
s = v0t − 16t2,
where s is the height, v0 is the initial velocity, and t is the time. Find the time for a projectile to return to Earth if it has an initial velocity of 248 ft/s.
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi  

The height of a projectile fired upward is given by the formula: 

s = v0t − 16t^2    |Note the use of " ^ "

Find the time for a projectile to return to Earth if it has an initial velocity of 248 ft/s.

s = 0 when the projectile returns to earth.

0 = 248t - 16t^2

16t^2 = 248t

t = 248/16 = 15.5s

Wish You the Best in your Studies.