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(a) If you jump out of an airplane without a parachute, you fall faster and faster until air resistance causes you to approach a steady velocity, called the terminal velocity. Sketch a graph of your velocity against time.

(b) Explain the concavity of your graph.

(c) Assuming air resistance to be negligible at t = 0, what natural phenomenon is represented by the slope of the graph at t = 0?

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