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Question: A 1200 kg car carrying two 110 kg football players travels over a bumpy "washboard" road with the bumps spaced 3.1m apart. The driver finds that the car bounces up & down with maximum amplitude when he drives at a speed of 4.2 m/s (approx 9.4 mph). The car then stops & picks up three more 110 kg passengers.

By how much does the car body sag on its suspension when these three additional passengers get in? (Express your answer using two significant figures.)

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