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OpenStudy (anonymous):
2. Amy is testing different designs of paper airplanes to find out which type of paper airplane can glide for the longest amount of time. She plans to lightly toss each paper airplane and measure the time it takes for each plane to reach the ground. Which of the following instruments should Amy use to measure time in this experiment? a stopwatch a barometer the minute hand of a clock a mechanical balance
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OpenStudy (anonymous):
stopwatch
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