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## Homework Statement

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.

## Homework Equations

fn=m(a-g)

## The Attempt at a Solution

fn= (85.0 kg) (1.85m/s^2--9.81m/s^2)

=991.1 N

fn=m(a-g)

= (85.0 kg) (1.60 m/s^2--9.81 m/s^2)

=969.85 N

The question I have is in the second part of the question should th value for a be positive or negative?