Hi Maeve,
here is a taster of the book you mention, which is a new recommendation.
https://youtu.be/22vszc4TEJA?si=n_XHcu5p7CyF_DJc
There is a read along here.
I like how gravity has been personified and is not being a good friend to Leda in the story.
Of note is the ramp that the library cart rolls down. Ramps are a nice way to slow down falling objects in order to measure the time they take to fall (roll). This is how Galileo was able to observe falling objects in the early 1600s and realise that velocity was proportional to acceleration.
https://www.pbslearningmedia.org/resource/phy03.sci.phys.mfw.galileoplane/galileos-inclined-plane/
We have mentioned before how powerful a tool ramps can be in the primary classroom, see https://regentsctr.uni.edu/ramps-pathways/ramps-pathways,
and ramps may be a way for the children to be able to see which object goes faster, since “Ask students to think, pair share which object fell quicker. Give groups objects to test themselves” In dropping pairs of objects to see which one lands first, they are likely to fall too fast to note unless one object experiences much more air resistance than another. If that happens, then it is the air resistance that is making the difference.