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A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. The lift is performed
A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. The lift is performed in three stages, each requiring a vertical distance of 7.60 m: (a) the initially stationary spelunker is accelerated to a speed of 1.50 m/s; (b) he is then lifted at the constant speed of 1.50 m/s; (1:) nally he is decelerated to zero speed. How much work is done on the 60.0 kg rescue by the force lifting him during each stage? (a) Number n Units v (b) Number n Units v (c) Number n Units v
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