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A rock is thrown down from the top of a500-foot cliff. After 1second, the rock is traveling 47 feet per second. After 4 seconds, the
A rock is thrown down from the top of a500-foot cliff. After 1second, the rock is traveling 47
feet per second. After 4 seconds, the rock is traveling 143 feet per second.
a. Assume that the relationship betweentime, t, andspeed, s, is linear and write equation describing this relationship. Use ordered pairs of the form(time, speed).
b. Use this equation to determine the speed of the rock 5 seconds after it was dropped.
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