Newton’s first law says that if motion changes, then a force is exerted. Describe a collision in terms of the forces exerted on both objects.

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Each student aligns the edge of the object with the left edge of the ruler as shown above. all four students read the ruler with a measurement of 4.6 cm. which statement describes the data they collect? i believe the answer is: the data have poor precision and poor accuracy because of a systematic error.