Let's play pool!

What does pool have in common with our mirror? Well, in a pool game we often use the laws of reflexion. Maybe you already used these laws uncountable times unconsciously. If we are trying to understand processes on a mirror we have to understand the laws of reflexion.

1. (Image above) How will the ball move, if you hit it in the direction of the arrow?
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2. (Image above) You want to push the red ball into the hole (left down) using the white ball. Unfortunately the black ball is in your way. How can you manage to push the red ball into the hole anyway?
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3. (Image above) The red ball is pushed into the hole (right up) with the white ball. Can you tell the way of the white ball if it is pushed in the shown direction?
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