Haunted... Trailer?

Good afternoon, So long sence i posted, How ever, this has brought be back. Just a few minutes ago I was in my room, when I suddenly heard about 5-7 bangs out in the living room, me and my mom both rushed out to see what it was. Once we entered the living room we found a picture of my Cousin, in his Marine uniform, (hes in the marines) on the ground with flowers we had under it (hes still alive just a ironic placement) and a little table we placed under it with the flowers, across the room from where it was, I am freaked out, as I am more aware of Paranormal things, my mom does not believe in it. But i dont know what to think of it, is a Picture really strong enough to knock a table ACROSS the room? Please help. I will take my laptop and get a video of the picture and the table. And where the table was found. Everything is back up exept the picture, as we dont want anything else to break, if it is the picture. Any help? This is the first time this type of thing happened, where something fell and broke.