Physical Science Use the height formula in Example 10 to work the given problem. Note that an object that is dropped (rather than thrown downward) has initial velocity v0 = 0.
You are standing on a cliff that is 200 feet high. How long will it take a rock to reach the ground if
(a) you drop it?
(b) you throw it downward at an initial velocity of 40 feet per second?
(c) How far does the rock fall in 2 seconds if you throw it downward with an initial velocity of 40 feet per second?
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