The apparent weight of a person inside a lift changes when the lift moves up with a sudden acceleration and when the lift moves down with the same acceleration. What can be inferred from this?
1) The person's weight increases when the lift moves up and decreases when the lift moves down
2) The person's weight decreases when the lift moves up and increases when the lift moves down
3) The person's weight remains constant regardless of the direction of the lift's movement
4) The person's weight is not affected by the lift's movement