College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 128

The Taipei 101 Tower in Taipei, Taiwan is a 509-m (1667-ft), 101-story building (Fig.). The outdoor observation deck is on the 89th floor, and two high-speed elevators that service it reach a peak speed of 1008 m/min on the way up and 610 m/min on the way down. Assuming these peak speeds are reached at the midpoint of the run and that the accelerations are constant for each leg of the runs, (a) what are the accelerations for the up and down runs (b) How much longer is the trip down than the trip up

FIGURE A tall one The Taipei 101 Tower in Taipei, Taiwan, is a tall building with 101 stories. It has a height of 509 m (1671 ft). See Exercise.