We were studying acceleration. We had a partner and our partner would sit in the chair and the first time down the hallway we would push them slowly. When we came back we would push them really, really fast. The second time we did it we added 35 pounds to the chair and pushed them down the hallway. When we came back we just pushed an empty chair.
We learned that we used more force when we were pushing our partner really really fast than when we were pushing them slow. We also used more force when we pushed our partner with the 35 pounds than we did when we pushed the empty chair.
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