A speed trap is set up with two pressure activated strips placed across a highway, 124 meters apart. A car is speeding along at 29.2 meters per second, while the speed limit is only 19.2 meters per second. At the instant the car activates the first strip, the driver begins slowing down. What minimum deceleration (magnitude only) is needed so that the driver's average speed is within the limit by the time the car crosses the second strip?

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