The equation that solves a problem is 
. The problem is:
A. How far above its initial position does a rock travel in 2.0 s when thrown up from a point 40 m above the ground?
B. How far below its initial position does a rock travel in 2.0 s when thrown up from a point 40 m above the ground?
C. What is the position relative to the ground of a rock thrown up at 3.0 m/s from a roof 20 m above the ground 2.0 s after it is released?
D. What is the change in position relative to the ground of a rock thrown up at 3.0 m/s from a roof 20 m above the ground 2.0 s after it is released?
E. What is the position relative to the ground of a rock thrown up at 3.0 m/s from a roof 20 m above the ground if its maximum height is 33.6 m?
Answer: C
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Fill in the blank(s) with correct word