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A car with the mass of M = 1000 kg is occupied by 4 persons (75...

A car with the mass of M = 1000 kg is occupied by 4 persons (75 kg each). When driving over a road with a wavy surface, it is observed that the car swings up and down at a maximum speed of 17 km / h. The waves in the road are 4 m apart. The car stops and the 4 people get off.
How far does the floor of the car lift as a result of weight reduction?

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