SOLUTION: a rock is propelled upward from the top of a building 60 feet tall at an initial velocity of 200 feet per second. the function that describes the height of the rock in terms of tim

Question 629186: a rock is propelled upward from the top of a building 60 feet tall at an initial velocity of 200 feet per second. the function that describes the height of the rock in terms of time t is s(t)=-16t^2+200+60. determine the time at which the rock reaches its maximum limit.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

Find when is a maximum
The maximum ( or minimum ) of a 2nd degree
equation of the form
occurs at

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At sec, the height is a maximum
Here's a plot

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