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On Pset4 "bounce" walkthrough, I learnt how the ball bounces horizontally. Can anyone please help me in bouncing the ball at angles after it touches the window edges and paddle?

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The trajectory of the ball is a composition of x-velocity and y-velocity. if you invert one of them (from positive to negative) when you hit an obstacle, the relative movement of the ball will be inverted as well.

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  • did you just answer your own question?
    – lethaljd
    Commented Aug 1, 2014 at 18:54
  • Yes. In other words, I found a question that was asked many times, and decided to publish and answer it on StackExchange to give a solid pointer to other students.
    – Cygni_61
    Commented Aug 2, 2014 at 7:58

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