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September 20, 2014

Homework Help: AP physics c

Posted by please help on Thursday, October 10, 2013 at 10:38pm.

A helicopter lifts a 63 kg astronaut 10 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10.
(a) How much work is done on the astronaut by the force from the helicopter?

Incorrect: Your answer is incorrect.
J

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

Correct: Your answer is correct.
J

(c)What is the kinetic energy?
J

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

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