Adolphin is trying to jump through a hoop that is fixed at a height of 3.5 m above the surface of her pool. the dolphin leaves the water at an angle of inclination of 40°. determine the minimum speed the dolphin will need when leaving the water in order to reach the height of the hoop.

Vertical speed u =  v sinФ
Energy is conserved:
E = mgh = 1/2mu²

u = √(2gh)

v = √(2gh)/ sinФ

g = 9.81 m/s²
h = 3.5
Ф = 40°

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