| What is Motion? Section 1-1: Frames of Reference |
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| A. Frame of reference is the background or object for comparison. 1. It depends on the type of movement and the position from which you are observing. 2. The most common frame of reference is the Earth. 3. To describe something that is moving you compare it with a background or an object that is assumed to be stationary. 4. The background or object is called a frame of reference. |
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