Solve the problem.A ball is thrown vertically upward with an initial velocity of 192 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what intervals of time is the ball less than 512 above the ground (after it is tossed until it returns to the ground)?
A. {x ? 4 sec < x < 8 sec}
B. {x ? 0 sec < x < 3.5 sec and 8.5 sec > x > 12 sec}
C. {x ? 0 sec < x < 5.5 sec and 6.5 sec > x > 12 sec}
D. {x ? 0 sec < x < 4 sec and 8 sec > x > 12 sec}
Answer: D
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