During the construction of a high-rise building, a worker accidentally dropped his portable electric screwdriver from a height of 144 ft. After t sec, the screwdriver had fallen a distance of 
ft.
?
What was the velocity of the screwdriver at the time it hit the ground?
?
A. 12 ft/sec
B. 48 ft/sec
C. 768 ft/sec
D. 96 ft/sec
Answer: D
Mathematics
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cosh x
A. -? B. 1 C. 0 D. ?
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A. -239°7'7'' B. -239°42' C. -239°21' D. -239°7'
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Solve.A meteor circles the earth in an elliptical orbit. The major axis of the elliptical orbit is 22 × 108 miles long and the minor axis is 8 × 108 miles long. If the earth is at one focus of the orbit what is the distance from the other focus?
A. 2 × 
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B. 2 × 
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C. 
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