The Effect of Movement on Readings of a Scale

I am holding a book in my hand and standing on a scale, the scale reads X Newtons. Then at t=1 second, I start to move the book, and by t=2 seconds, the book is at rest 0.5 m higher than its initial position. How did the reading of the scale change in those 2 seconds? The key concern I am having is if the book accelerates upward, then the scale reading should increase, but if it moves with a constant velocity, the reading should stay the same, so I am unclear about which one of these two possibilities is correct. Which one is it and how is the reading affected?

P.S. I tried this at home on my scale but my scale doesn't update its value fast enough.

• @ArnavT All you can say is that the number on the scale goes up above $X$, then down below $X$, and then back to $X$. The time-averaged number on the scale is still $X$. You can't say exactly how high it goes, how low it goes, or how long each part is without more information. – Chris Feb 1 '18 at 1:51