Physics, 30.07.2019 03:10, marco34perez

“rocket man” has a propulsion unit strapped to his back. he starts from rest on the ground, fires the unit, and accelerates straight upward. at a height of 21.0 m, his speed is 5.0 m/s. his mass, including the propulsion unit, has the approximately constant value of 140.0 kg. find the work done by the force generated by the propulsion unit.

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“rocket man” has a propulsion unit strapped to his back. he starts from rest on the ground, fires th...