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12. A pole-vaulter approaches the takeoff point at a speed of 9.0 m/s. Assuming that only this speed determines the height to which she can rise, fins the maximum height at which the vaulter can clear the bar.
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Answer #1

According to the given problem,

Using the conservation of energy principal,

K.E = P.E

½mv² = mgh,

h = v²/(2g)

h = 4.1284m

h = 4.13m

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