Interactive Lab · Mechanics

Terminal Velocity — when drag balances weight

Air density ρ1.225 kg/m³
Gravity g9.81 m/s²
Terminal velocity
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Current speed
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Acceleration
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Drag force
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Weight
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Drop the object and watch drag grow until it cancels weight. Time is compressed to a few seconds; the curve is the exact v = vt·tanh(g·t / vt).