gif experiment rebot
https://visions.upc.edu/ca/steam-a-classe/e8-la-fisica-del-rebot/gif-rebot-pilota.gif/view
https://visions.upc.edu/ca/steam-a-classe/e8-la-fisica-del-rebot/gif-rebot-pilota.gif/@@download/file/gif rebot pilota.gif
gif experiment rebot