1. The problem statement, all variables and given/known data Luke stands on a scale in an elevator which has a constant acceleration upward. The scale reads 0.968 kN. When Luke picks up a box of mass 18.6 kg, the scale reads 1.215 kN. (The acceleration remains the same.) Calculate the acceleration of the elevator (enter first). Is it up or down? my answer: 3.48 m/s^2 up Calculate Luke's weight. 2. Relevant equations I cant get luke's weight, i know i use F=MA, but when i plugged in the knowns i got Kg, and it wants N.