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A woman is riding a Jet Ski at a speed of 20 m/s and notices a seawall straight ahead. The farthest she can lean the craft in order to make a turn is 20°. This situation is like that of a car on a curve that is banked at an angle of 20°. If she tries to make the turn without slowing down, what is the minimum distance from the seawall that she can begin making her turn and still avoid a crash?

What I did:
v= 20 m/s
g= 9.81 m/s^2
Theta= 20 degrees

r= (20 m/s)^2 / tan(20) x (9.81 m/s^2)

r is estimated to be 112.027 m

Am I correct in this case?

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