Answer:
The height of the arrow in meters after t seconds is given by the equation h = -1.8t^2 + 66t.
The average velocity over a given time interval [t1, t2] is given by the formula:
(height at t2 - height at t1) / (t2 - t1)
To find the average velocity, we need to know the values of t1 and t2. Without this information, we can't calculate the average velocity. If you provide me with the values of t1 and t2, I can help you to calculate the average velocity.
It's also worth mentioning that the equation for the height of the arrow is considering that there is no air resistance on the moon, as well as the acceleration due to gravity on the moon is 1.6 m/s^2 (16.6% of Earth) which is the reason for the negative value of the coefficient of t^2.