What purposes did jousts and tournaments serve?

What is the drag coefficient of a ping pong ball? 2 major Phases of gymnastics in PE? What color are golf balls in Antarctica? How do you take off hub of bicycle rim? What is Andy roddick's record against Roger Federer? What are the instances when an invalid put is declared in shot put? What are the best replacement options for Shimano brake hoods? What is a solo? What are the key factors to consider when optimizing your road biking position for maximum comfort and performance? Good size bmx bike for you? How can I replace a bike stem? What could be the possible reasons for an electric bike speedometer not working? How can we find motivation and strength to keep going when faced with challenges, remembering the quote "It never gets easier, you just get stronger"? What is the significance of Murray bike serial numbers and how can they be used to identify and track a specific bicycle? Why the magic tee is called the magic tee? Can I use an inner tube with a tubeless tire on a bicycle? What is the penalty for having 15 clubs in bag? What is abrasive paper and what is it used for? How to change gears on a bike effectively and smoothly? How are handlebars measured for bicycles?