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A 6.50​-ft-tall man walks at 8.00 ​ft/s toward a street light that is 14.0 ft above...

A 6.50​-ft-tall man walks at 8.00 ​ft/s toward a street light that is 14.0 ft above the ground. At what rate is the end of the​ man's shadow moving when he is 11.0 ft from the base of the​ light? Use the direction in which the distance from the street light increases as the positive direction.

The end of the man's shadow is moving at a rate of ____ ft/s.

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