The air resistance (drag force) on a 200 g ball in free flight is given by FD

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The air resistance (drag force) on a 200 g ball in free flight is given by FD =2×10⁻⁴V², where FD is in newtons and V is in meters per second. If the ball is dropped from rest 500 m above the ground, determine the speed at which it hits the ground. What percentage of the terminal speed is the result? (The terminal speed is the steady speed a falling body eventually attains.)

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