What negative acceleration must it produce

Reference no: EM13508279

A railroad car is released from a locomotive on an incline. When the car reaches the bottom of the incline it has a speed of 30mi/h at which it passes through a retarder track that slows it down. If the retarder track is 30 ft long, what negative acceleration must it produce to bring the car to rest?

Reference no: EM13508279

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