On the Way to Lower Floors,an Elevator Begins Its Descent

Multiple Choice

On the way to lower floors,an elevator begins its descent from rest at a constant acceleration,descending the first 5.0 m in 0.85 s.What is the apparent weight of a 75 kg man inside the accelerator during this time interval?

A) 0.74 kN
B) 1.8 kN
C) 0.30 kN
D) 1.0 kN