Experiment of gravity

Today we did something different. We did some experiment with gravity. for those that don't know about gravity ill tell yous a little bit about it. So gravity is something that hold everything down to the ground. If you drop something it will drop right to the ground. Now back  to today's work the experiment that i was talking about we did something with cups chocolate coins nickle-bones and cardboard. So what we did is but the cardboard on top of the cups then we put the chocolate coin on top we that's don't we have to pull the cardboard as fast as you can then you will see the coin drop in the cup