SOLUTION: The height of an object dropped from the roof of an eight story building is modeled by: h(t) = -9t^2 + 81, 0 < t < 2. Here, h is the height of the object off the ground in feet, t
Question 1165252: The height of an object dropped from the roof of an eight story building is modeled by: h(t) = -9t^2 + 81, 0 < t < 2. Here, h is the height of the object off the ground in feet, t seconds after the object is dropped. Find and interpret the average rate of change of h over the interval {0,2} Found 2 solutions by Alan3354, ikleyn:Answer by Alan3354(69443) (Show Source):
One the Earth, where we live, the right equation for the free fall is
h(t) = -4.9*t^2 + 81, (if the initial height is 81 meter)
where h(t) is the height in METERS (NOT IN FEET).
In feet,
h(t) = - 16*t^2 + 81 (if the initial height is 81 feet)
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