संभाषण करते समय किन किन रूपों से बताना चाहिए पाठय निबंध के आधार पर समझाइए
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- Friction is a force between two surfaces that are sliding, or trying to slide, across each other. ... Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. Friction always slows a moving object down.
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