3 years ago

15 POINTS!!!!!!!!!!!!!!

Mathematics

1 answer:

ss7ja [257]3 years ago

3 0

Answer:

7.7 seconds

Step-by-step explanation:

t = √(h / 4.9)

t = √(290.57 / 4.9)

t = √59.3

t ≈ 7.7

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