James weighs 120 pounds. He ran up the steps which rose 12 feet. John weighs 91 pounds. He ran up the same steps as James. If both boys reached the top of the 12-foot stairs at the same time which boy?

To determine which boy exerted more power while running up the stairs, we can look at the work done against gravity, which is calculated using the formula: work = weight × height. James, weighing 120 pounds, exerted more force than John, who weighs 91 pounds, since weight is a factor in the work done. However, since both reached the top at the same time, John would have had to run faster, indicating he exerted more power relative to his weight. Ultimately, while James did more work due to his higher weight, John may have demonstrated greater efficiency or power-to-weight ratio in reaching the top simultaneously.