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ENHZ:
A sky diver with a mass of 65 kg opens his parachute. He goes from terminal velocity, 55.88 m/sec, to 8 m/sec. The upward force of the parachute, once opened, was 1037.4 N. How long did it take for the skydiver to slow down?
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Vocaloid:
impulse = change in momentum F*t = m*Δv
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