Question

if an elevator starts from rest and rises with an acceleration of +0.29m/s^2. If each floor is 3m high,

a) how long does it take to pass the 12th floor?

b) how fast is the elevator going when it passes the 5th floor?

Answer 1

distance=1/2 a t^2
time=sqrt(2*3*12/.29)

vf=at=.29*time where time is sqrt(2*3*5 /.29)