system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 : Teacher just said that when gravity is the only acting force, an elephant and a feather would fall at the same speed.

This makes no sense, as an elephant has greater mass, and therefore a greater pull towards the earth.
gpt
Think of the elephant as a million feathers tied together. A million feathers don't fall faster than one feather, whether they are tied together or not. (If you ignore the effect of the air, which is of course huge.)