brownkitty brownkitty

03-11-2022
Mathematics

Answered

A rock is thrown upward from the top of a 25 foot tower with an initial upward velocity of 110ft/sec. The height of the rock as a function of time can be modeled by the equation: h(t) =-16t^2+100t+25. Determine the timeframe when the rock is at or below a height of 20 feet.

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