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\(x = (\frac{1}{4})sv^2\)

=> \(\frac{x}{s} * 4 = v^2\)

=> \(25 * 4 = v^2\)

=> \(100 = v^2\)

=> \(v = 10\)

Answer B
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x = 1/4 sv2
x/s = 25

-> x/s = 25 = 1/4 v2
v2 = 100
-> v = 10
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