A rocket is launched vertically upward with a speed 
. Take the upward direction as positive and let the mass be m. Assume that the only force acting on the rocket is gravity, which is inversely proportional to the square of the distance from the center of the earth. Let 
be the distance from the center of the earth at time, t. the correct differential equation
for the position of the rocket is
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. none of the above
Answer: B
Mathematics
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A. True B. False
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Fill in the blank(s) with the appropriate word(s).
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Given a = 11, b = 14, and c = 10, use Heron's Area Formula to find the area of triangle ABC. Round your answer to two decimal places. ?
A. 54.64 B. 47.04 C. 41.31 D. 48.87 E. 43.32
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Write as a decimal.200%
A. 2.01 B. 2 C. 20 D. 0.2
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