A rocket is being launched straight up. Air resistance is not negligible. Which

Question

A rocket is being launched straight up. Air resistance is not negligible.
Which of the following is the correct motion diagram for the situation described above? (see Figure 1 link:
http://tinypic.com/r/2r5rf9j/6)
and
Draw a free-body diagram.
Draw the force vectors with their tails at the dot. The orientation of your vectors will be graded. The exact length of your vectors will not be graded but the relative length of one to the other will be graded

>>>>> http://tinypic.com/r/2r5rf9j/6 <<<<<<<<<

Explanation / Answer

Initially the velocity of the rocket wiil be minimum in upward direction then it will starts increasing due to acceleration and finally reaches a terminal velocity where air resistance and gravity equals the net upward fprce provided by burning of fuel .....so answer is (b)

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