Posted by **Sarah** on Monday, March 30, 2009 at 6:34pm.

Use a(t)= -9.8 meters per secondas the acceleration due to gravity.(Neglect air resistance)

The Grand Canyon is 1800 meters deep at its deepest point. A rock is dropped from the rim above this point. Write the height f the rock as a function of the time t in seconds. How long will it take the rock to hit the canyon floor?

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