Using calculus, it can be shown that if a ball is thrown upward with an initial velocity of 16 ft/s from the top of a building 256 ft high, then its height h above the ground t seconds later will be h = 256+16t-16t². During what time interval will the ball be at least 64 ft above the ground.
What will be an ideal response?
0?t?4 sec
Mathematics
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