Have an examination coming up, do we? Well, maybe some suggestions on how you can approach this yourself. Hopefully from thinking about these you can formulate further, original questions (and their answers). Physics 1. There is a free kick awarded, and the team's fly-half elects to kick for touch at distance. What is the mathematical form of the trajectory of the center-of-mass of the ball, and why does it have that form? 2. Player A has mass 85 kg and velocity 10 m/s. Player B will tackle A. B is a big lad, 115 kg, but is standing still; he will step into the tackle at 2 m/s. What is the combined (net) momentum, assuming they are moving directly toward one another. Biology 1. What is the function of the anterior cruciate ligament? 2. Explain how a counter-coup injury in a tackle could cause a concussion. Chemistry 1. What are anabolic steroids and why are they banned in rugby? 2. Graph qualitatively (i.e., unscaled) the O2 and CO2 content of your lungs during a scrummaging sequence. Assume that you inhale immediately before contact, hold the engagement for 30 seconds, and then exhale. I'm sure you can see where this is headed: Think about things that happen in rugby in terms of how you would describe them to your science master. Mark L.
