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Question: 1349 a sky diver jumps from a helicopter and is...

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13.49 A sky diver jumps from a helicopter and is falling straight down at 30 m/s when her parachute opens. From then on, her downward acceleration is approximately a g - cv2, where g = 9.81 m/s2 and c is a constant. After an initial transient period, she descends at a nearly constant velocity of 5 m/s. (a) What is the value of c, and what are its SI units? (b) What maximum deceleration is the sky diver subjected to? (c) What is her downward velocity when she has fallen 2 m from the point at which her parachute opens?

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