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Pole-Vaulting

In the sport of pole-vaulting, the height h (in feet) reached by a pole-vaulter is a function of v, the velocity of the pole-vaulter, as shown in the model below. The constant g is approximately 32 feet per second per second. Pole-valuter height model:
Image

1

To reach a height of 9 feet, what is the pole-vaulter's velocity?

2

To reach a height of 16 feet, what is the pole-vaulter's velocity?