Physics appeared to me this weekend while playing tennis. I was playing a match when suddenly realized that this was all related to what I was just learning in physics class. It all had to do with impulse and momentum. While hitting the ball, the momentum remained unchanged throughout the system. My racket and the ball retained their same momentums before and after the collision. This is just like an inelastic, “bouncy” collision. Both the ball and my racket have initial velocities and final velocities; therefore, the momentum remains the same (conservation of momentum). Through this collision, the momentum remains the same however; the KE is changed because it is an inelastic collision where, KE is lost through factors such as, heat (of the collision), friction, air resistance, etc… I found tennis is related to many physics concepts, impulse momentum being two major ones. Physics just never ceases to “POP!” out at me.
3 comments:
what gives you more powerful groundstrokes, loose strings or tight strings? can anyone answer this correctly and then explain why? it's all about this chapter on momentum and impulse!
extra credit!
higher tension.
Loose strings gives it more power because it increases the time of impact. Also creates a rebound effect(kind of).
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