In the original basketball rules created by Dr. Naismith, how long did each half last?

Patrick is jumping rope to trade for his next boxing match. he learned the correct way to jump rope when he was a member of his schools wrestling team. which training principle does this scenario represent

In some states the highway patrol use plane carrying radar device5s to monitor traffic as the plane flies over traffic the radar device can tell the officers how fast each car is moving at the moment in time the radar device determines the cars

The only part of the body that should touch the ball when setting in volleyball