- #1

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W= Fn*13.4

Fn*13.4= .5mv^2

(mg sin25 - (.200)(mg cos25))(13.4)= .5mv^2

(g sin25 - (.200)(g cos25))(13.4)= .5v^2

((9.8) sin25 - (.200)((9.8) cos25))(13.4)= .5v^2

31.6949624131 = .5v^2

2(31.6949624131) = v^2

sqrt (63.3899248261) = v

7.96177899882 = v

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Vy= 7.96177899882 (sin25)

Vy= 3.36479320085

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Vy = sqrt (3.36479320085^2 + 2(-9.8)(-3.2))

Vy = 8.604756 m/s