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James wanted to know if stretching before a race made him run faster. He ran one 100 meter
dash without stretching and timed it. Then he took a twenty minute break. After his break he
stretched and ran another 100 meter dash. Which he also timed. He wore the same shoes and
ran the same path.
1. What is the independent variable?
2. What is the dependent variable?
3. What is a constant?
4. Write a hypothesis for the above experiment: