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ELEVATORS A100 kg person is standing on a scale in an elevator. Starting from rest, the...

ELEVATORS A100 kg person is standing on a scale in an elevator. Starting from rest, the elevator descent attaining a downward speed of 2.0m/s in 4sec. it then travels with a constant speed during the next 2 sec. finally the elevator undergoes a uniform acceleration I. the positive y direction for 10 sec and comes to rest g=9.8m/s^2


what is the scale reading
1. before the elevauor starts
2. during 1st accel
3,while constant
4. during the time slowing down
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