“Newton’s Law says force is equal to mass times acceleration. What it doesn’t say is what a penalty is, but perhaps it should. Rafa Benítez reckons so at least after his team ended another weekend in the relegation zone, fans whistling and waving white hankies while he had a quick flick through Principia on his way to meeting the ladies and gentlemen of the press. Never mind the referee, the assistant referees, the fourth official, the video assistant referee, the assistant to the video assistant referee (two of those), the TV technician, the supervisor and whoever lurks in that side-room at Las Rozas, what we really need is a physicist, the Celta coach told them; time to travel to Nasa to find the best. …”
Guardian