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6-48.
  1. On the moon, the acceleration due to gravity is about −5 ft/sec2. An astronaut jumps into the air with an initial upward velocity of 12 ft/sec. Homework Help ✎

    1. How long is the astronaut off the ground?

    2. How far off the ground does the astronaut rise?

What do the zeros of s(t) represent?

Find the y-value of the vertex of s(t). You can use Algebra or Calculus.