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lately, i have been trying to learn how to play drums. it is quite difficult to learn but i still have joy in learning how. One day, it just happened to me and wondered, "hey, drums are perfect example to show what we have been learning this entire time!" First of all, the way drum stick bounces off the drums is the proof of newtons law and the laws of conservation of energy. the energy i put in (both potential and kinetic) to hit the drum is conserved (well not really but kind of). Because of friction, some energy must have turned into heat energy but the more energy i put in, the louder the sound becomes and faster the stick bounces back from the drum which explains this concept of cons. of energy. Also, the tension of the drum deteremines the pitch and frequency of the sound i make. The tighter drums (higher tension) give more higher pitched sound while loosened drums give off lower pitched noise. Not only i learned drums, i was able to review my physics knowledge, Doc!