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10 A ground-level floodlight located 40 m from the foot of a building shines in the direction of the building. A 2 m tall person

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10 A ground-level floodlight located 40 m from the foot of a building shines in the direction of the building. A 2 m tall person walks directly from the floodlight towards the building at 1 ms 1. How fast is the person's shadow on the building shortening at the instant when the person is: a 20 m Im from the building? 40 m

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