Are the lessons the coach gave good physics?
Use leverage. It is easier to turn someone than to move them.
Notes:
The coach does know alot of physics.
The translations of the items above are:
ãHit below the other playerâs center of mass so you knock him over more easilyä
ãTackle by using force exerted through your own center of mass. That is the way to exert the maximum force.ä
ãKeep pushing on the ground to exert force and to maintain your balanceä
The last statement needs no translation. It is good physics. A good defensive end often uses leverage to turn a blocking offensive tackle so that the defensive player can get around him.