The general size of golf balls has a similar history to the golf ball weights. In the past, there was great variation among golf balls. But now balls are required to have a consistent size. According to the rules, the diameter of a golf ball must not be less than 1.680 inches, or 42.67 mm.
Are all golf balls the same diameter? What is the standard Golf ball size? In today's golf world, there is only one standard size golf ball that is legal in tournament play and authorized to sell in golf shops. Read More...
Skateboarding is clearly faster than walking: Our observations at UC Davis found that skateboarders travel between 6 and 13 miles per hour, with an average of 9.7 miles per hour. At two- to four-times the speed of walking, skateboards can extend the range of destinations reachable under human power.
Is skateboard faster than running? Looking at other events on the track, in both speed skating and running, the rule of thumb seems to be that skating is, very roughly, twice as fast as running. Read More...
American football is a game of intense physical play with complex strategy to score points by advancing the ball to the opponent team's end-zone. Rugby is best described as a blend of the contact of American football, the running of soccer, and the transition of basketball.
Is American football based off rugby? It turns out that American Football does not come from rugby. They both descend from an older form of a sport with a round ball. Read More...