How much force was exerted on Gophers wide receiver Eric Decker earlier this year when he made that unbelievable TD catch and took a shot to the chin against Cal? Well, if you are like us, you sit around constantly and ask yourself just that thing. And thanks U of M physics professor Dan Dahlberg, we are all now wiser. Ryan M. over at the U passes along this very cool video, which we'll let speak for itself.