Ejercicios Resueltos de Physics & Chemistry (4º ESO)

A person of mass 70 kg stands on a weighing scale in an elevator which is moving and observes different lectures on it. Determine the acceleration of the elevator and if it is moving up, down, accelereting, breaking or not moving if the values of the scale are: a) 66 kg, b) 74 kg and c) 70 kg.

How many newtons of force are represented by ?