Mathematics, 06.08.2021 23:20 ninaaforever

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 ft per sec. The heights of the ball in feet is given by the equation s= -277 +30t+6.5, where is the number of seconds after the ball was thrown. Complete parts a and b.
a After how many seconds is the ball 14 ft above the moon's surface?

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