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kobusy [5.1K]
2 years ago
5

A smart-phone is thrown upwards from the top of a 384-foot building with an initial velocity of 32 feet per

Mathematics
1 answer:
Anna007 [38]2 years ago
5 0

Answer:

When t = 4

Step-by-step explanation:

The phone will hit the ground when h = 0.

16t^2 + 32t + 384 =0 \\ \\ t^2 + 2t + 24=0 \\ \\ (t+6)(t-4)=0 \\ \\ t=-6, 4

However, as time cannot be negative, we know the answer is when t = 4.

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