A man with a mass of 85.0 kg rides downward on an elevator.Initially the elevator accelerates downwards at 1.845 m/s^2 and eventually slows at 1.60 m/s^2 as it reaches the ground floor. Find the mans apparent weight as he starts down and as he reaches the ground floor.
The Attempt at a Solution
fn= (85.0 kg) (1.85m/s^2--9.81m/s^2)
= (85.0 kg) (1.60 m/s^2--9.81 m/s^2)
The question I have is in the second part of the question should th value for a be positive or negative?