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The best leaper in the animal kingdom is the puma, which can jump to a height of 11.5 ft when leaving the ground at an angle of 44 degrees. With what speed, in SI units, must the animal leave the ground to reach that height?
m/s
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Added Mon, 22 Jun '15
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11 ft = 3.5 m in SI

at max height :
vy^2 = uy^2 - 2gh
0 = uy^2 - 2gh

so uy = sqrt(2gh) = sqrt(2*9.8*3.5) = 8.28 m/s
so u = uy / sin44 = 11.92 m/s
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Added Mon, 22 Jun '15
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