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A 1400 kg car carrying four 82 kg people travels over a “washboard” dirt road with...

A 1400 kg car carrying four 82 kg people travels over a “washboard” dirt road with corrugations 4.0 m apart. The car bounces with maximum amplitude when its speed is 13 km/h. When the car stops, and the people get out, by how much does the car body rise on its suspension?

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