A helicopter lifts a 81 kgastronaut 20 m vertically from, Physics

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A helicopter lifts a 81 kgastronaut 20 m vertically from

A helicopter lifts a 81 kgastronaut 20 m vertically from theocean by means of a cable. The acceleration of the astronaut isg/10.

(a) How much work is done on the astronaut by the forcefrom the helicopter?

(b) How much work is done on the astronaut by her weight?

(d) What is the speed of the astronaut just before she reaches thehelicopter?

m/s

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