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Answer:
322 m
Step-by-step explanation:
y = y₀ + v₀ t + ½ gt²
If we take down to be positive, then:
y = 0 + (5.10) (7.60) + ½ (9.8) (7.60)²
y = 322 m
The skyscraper is 322 m tall.
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