Question

In Example 5.8 in the text book, we investigated the apparent weight of a fish in an elevator. Now consider a 72.0 kg man standing on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.20 m/s in 0.80 s. It travels with this constant speed for the next 5.00 s. The elevator then undergoes a uniform acceleration in the negative y direction for 1.50 s and comes to a rest. What does the spring scale register:
a) before the elevator starts to move,
b) during the first 0.80 s,
c) while the elevator is travelling at constant speed, and
d) during the time interval it is slowing down.

Answers:
a)time, distance and force.
b)speed of 1.20m/s
c)time in seconds
d)force apply by mass and acceleration.

Any clarification or help....

Answer 1

i don't understand..more clarification pleaseee