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Q. What is the force of air resistance on a 100 kg sky-diver who is falling with a constant acceleration of 4m/s/s?

Q. A 55.0 kg pole vaulter running at 8.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump?

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