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Question is in the image, there's two parts btw

 May 17, 2021
 #1
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h will be ground level  = 0   when the ball comes down

0 = -16t^2 + 60 t + 3       Quadratic formula  shws t =   15/8 +- sqrt (237)/8      <======  throw out the negative 't' value

 

find h when t = 6.6

h = -16(6.6)^2 + 60 (6.6) + 3         I'll let you finish....

 May 17, 2021

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