Question: A 57.2 kg man with a rocket pack is falling toward the ground at a speed of 46.8 m/s when he activates the rocket pack.

A 57.2 kg man with a rocket pack is falling toward the ground at a speed of 46.8 m/s when he activates the rocket pack. If the rocket pushes upward with a force of 1560 N, how long does it take for his speed to be reduced to 9.51 m/s?

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