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Altitude of 575 meter with zero initial velocity; 8.0 second she falls freely; rate of descent at 15m/s^2 until her rate of descent reaches 5.0 m/s. At this point she adjust her rocket engine control to maintain that her rate of descent until she reaches ground.
(a) On single graph sketch her velocity and acceleration as functions of time(Take upward to be positive)
(b) Find what is her speed at the end of the first 8.0 second?
(c) Calculate the duration of her slowing down period?
(d) Compute how far does she travel while slowing down?
(e) Compute how much time is required for the entire trip from the helicopter to the ground?
(f) Find her average velocity for the entire trip?
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