Answer:

Step-by-step explanation:
as with all functions f(t), the average rate of change on [a.b] is

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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A.
Because the negatives cancel each other out to make a positive
Answer:
A.
Hope It Help
Step-by-step explanation:
Brainliest please