Multiple Choice
A person standing near the edge of a cliff 290 feet high throws a rock upward with an initial speed of 80 feet per second. The height of the rock above the lake at the bottom of the cliff is a function of time:
Find the velocity of the rock when t = 7 seconds.
A) -72 inches per second
B) 66 feet per second
C) -144 feet per second
D) -72 feet per second
Correct Answer:
Verified
Correct Answer:
Verified
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