Journal 1: On Saturday, Sept. 6, I went to a tennis match between the Iolani Raiders and HBA Eagles. When the tennis ball is hit, Newton's third law of motion is applied. In his third law, Newton states, "For Every Action There Is An Equal And Opposite Reaction." When a tennis ball hits the strings of a tennis racket, the ball reacts by springing forward in the opposite direction. Tennis also can be used as an example for positive and negative acceleration. As the ball comes from across the net, it is moving in the positive direction with a positive velocity. Because of air resistance, the ball's acceleration is negative. At the point of contact between the racket and ball, the ball's acceleration becomes negative, then becomes positive as the ball slows down while moving in the opposite direction at a negative velocity.
4 comments:
Hello,
I learned alot about newtons third law. it was great!
grant
i used to play tennis
i sucked
haha you'd probably beat me
by a lot
TENNIS!!!! OHHHHH YEAAAA Chris!
nice article on that btw. keep up the good work!
oohh good example for the negative acceleration! i could never think of an example other than moving backward at an increasing rate.
Post a Comment