Question

The Singer Building in New York City is 612 ft high. It takes 1 min, 15 s to ascend from the ground floor to the top of the building using the high-speed elevator. The elevator starts and ends at rest. Assume that it maintains a constant upward acceleration until it reaches its maximum speed, and then maintains a constant acceleration of equal magnitude until it comes to a stop. Calculate the magnitude of the acceleration of the elevator. Express this acceleration magnitude as a multiple of g (the acceleration due to gravity). Do not enter unit.

Answer 1

the acceleration is 16.32 ft/s^2
the acceleration in terms of acceleration due to gravity is 0.507 times g
the maximum velocity is 99.93 ft/s