A rock is dropped down from the top of a500-foot cliff. After 1second, the rock is traveling 32

32 feet per second. After 6

6 seconds, the rock is traveling 192

192 feet per second.

A rock is dropped down from the top of a 500-foot cliff. After 1 second, the rock is traveling 32 feet per second. After 6 seconds, the rock is traveling 192 feet per second. a. Assume that the relationship between time, t, and speed, s, is linear and write an equation describing this relationship. Use ordered pairs of the form (time, speed). b. Use this equation to determine the speed of the rock 7 seconds after it is dropped. a. Let s represent speed and t represent time. The equation describing the relationship between speed and time is (Simplify your answer. Use integers or fractions for any numbers in the expression.) b. The speed of the rock 7 seconds after it was dropped is