<s>[INST] An elevator starts from the 8th floor with its contents at rest relative to the earth. It accelerates downward for 8 seconds, decreases in speed for 4 seconds, and then moves upward for 22 seconds. The maximum speed of 20 m/s is reached after the 8 second acceleration period; and it decelerates to 0 m/s relative to the earth after the 4 second period. It then accelerates upward for 22 seconds. Assume it obtains a velocity of 12 m/s after the 22-second upward acceleration. Describe the motion graphically. Find the elevator's distance traveled, its average velocity, and the average acceleration during the entire 34 seconds.[/INST]