An astronaut on the moon throws a baseball upward. The astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. The height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5 , where t is the number of seconds after the ball was thrown. Complete parts a and b.a. After how many seconds is the ball 1616 ft above the moon's surface?
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An astronaut on the moon throws a baseball upward. The astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is
30
30 ft per sec. The height s of the ball in feet is given by the equation
s equals negative 2.7 t squared plus 30 t plus 6.5
s=−2.7t2+30t+6.5 , where t is the number of seconds after the ball was thrown. Complete parts a and b.
a. After how many seconds is the ball
16
16 ft above the moon's surface?
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