A rescue helicopter lifts a 79 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted through a distance of 11 m.(a) What is the tension in the cable? , (b) How much work is done by the tension in the cable? , (c) How much work is done by the person’s weight? , (d) Assume the person starts from rest. Using just energy find the final speed of the person. Show all working. :

830.3 N 9133.2 J 8524.89 J 3.92 m/s

A rescue helicopter lifts a 79 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted through a distance of 11 m. • Nerd Notes

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AP Physics 1

3.4 Conservation of Energy

3.3 Potential Energy

3.2 Work

3.1 Translational Kinetic Energy

2.5 Newton’s Second Law

2.2 Forces and Free-Body Diagrams

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A rescue helicopter lifts a 79 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s² and is lifted through a distance of 11 m.

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