Jeannette W.

# A ball thrown vertically...

A ball is thrown vertically upward from the top of a building 80 feet tall with an initial velocity of 64 ft per second. The distance s in feet of the ball from the ground after T seconds is s equals 80 + 64t- 16t^2. After how many seconds does the ball strike the ground ? after how many seconds will the ball past the top of the building on its way down?

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Lauren H.

Arturo, you are amazing! I read all your answers as I am trying to improve my long-forgotten math...
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08/30/18

Arturo O.

Thank you, Lauren.  How is your chemistry teaching and tutoring going these days?  Are they keeping you busy as the new semester ramps up?
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08/30/18

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