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A helicopter lifts a 62 kg astronaut 18 m vertically from the ocean by means of a cable. The acceleration of the astronaut isg. How much work is done on the astronaut by [a] the force from the helicopter and [h] the gravitational force on her? Just before she reaches the helicopter, what are her it} kinetic energy and [d] speed? a} Number Units V I E: | | b) Number Units V i c} Number Units V I H | i d) Number Units V i A force of 5.2 N acts on a 19 kg body initially at rest. Compute the work done by the force in (a) the first, (b) the second, and (c) the third seconds and (d) the instantaneous power due to the force at the end of the third second. (a) Number Units (b) Number i Units (c) Number i Units V (d) Number Units