4)
the arrow touches the ground when the heigth is 0
so we need to replace h=0 and solve for t

<em>the arrow tuches the ground at 3.4 seconds</em>
5)

replacing

<em>solve for m</em>

<em>the mass is 13.50Kg</em>
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Answer:
if im not wrong its 1 and 2
87 is greater than 13.688
Answer:
18 quarters
Step-by-step explanation:
4725mi= 24948000ft
There are 5280 feet in every mile!