What if...?
 Fred |
 Lilly |
„Okay, I understand. But you know what? In our riddle the two balls don't have the same size.“
„Yeah, right. They are very different in size and so they probably have different masses.“
„Well then, what would happen if two balls with different masses and with the same velocity collide frontally.“
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a) After the collision both balls stop moving and remain at the spot of the collision.
b) After the collision both balls move in opposite directions but at the same velocity.
c) After the collision the heavier ball stops moving completely and the lighter ball continues to move in opposite direction but at a velocity many times over its original one.