The Tenser's Floating Disk spell creates a platform that can hold a maximum amount of weight above the ground, following you (if it can) when you get more than 20ft away from it.
An interesting portion of the spell is that the disk will vanish if too much weight is put on it. Now, let's say that a wizard with this spell has a very, very high running speed. Let's say that his disk is loaded with a ram that weights very close to the disk's maximum, but not more than it. Let's say that the speedy wizard runs at his highest speed (let's say, 200ft per turn) towards a wall, followed by his "ram-on-disk", then, very close to said wall, the speedy wizard throws something at his disk to add to its total weight in order to go over its maximum, thus making it vanish.
Considering that the now mid-air ram was going at a pretty high speed (thus having a big momentum), will it continue its trajectory towards the wall (it is implied that the wizard will duck), and if so, can it damage said wall with its momentum ? The question also applies for any target (buildings, creatures, etc.).
So, two questions here : 1) Does the object continue its trajectory or just falls to the ground with no momentum ? 2) If it continues, does it damage stuff that it bangs into ?
Please note that I'm searching for an answer supported by the rules (I don't know if there are any rules related to momentum and/or collision). If really none exist, then yes, my question should be closed, and I'll be happy to oblige.