Determine the drag coefficient ca needed for a parachutist of mass m = 68.1 kg to have a velocity of 40 m/s after free-falling for time t = 10 s. Assume the acceleration due to gravity is 9.8 m/s². gm v(t) m - e Cd A. Isolate the Cd and Simplify the equation. B. Derive or solve the derivative of cd

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