ocr: Using momentum When two chings collide, their total momentum stays the same. This is always true of the momentum of two objects, unless they knock into more than one object or if other forces such as friction act on them. The target in the pinball game has no momentum because it: is not moving- This means that the total momentum is the same as the ball's momentum before it hits the target. After the collision, the ball and the target divide this momentum between them.
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