رد: فيزياء: أي استفسار أول سؤال
ماعليش أ. علي
A helicopter lifts a 72kg astronaut 15 m vertically from the ocean by means of a cable. The acceleration of the astonaut is g/10. How much work is done on the astronaut from the helicopter and Wg on her? Just before she reaches the helicopter what are her Kinetic energy and speed?
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