A pitched ball is hit by a batter at a 45-degree angle and just clears the outfield fence, 98 m away. If the fence is at the same height as the pitch, find the velocity of the ball when it left the bat. Ignore air resistance.

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  1. how long is in the air?

    hf=hi+Viv*time-1/2 g time^2
    0=0+Vi*sin45*t-4.9 t^2
    solve for t in terms of Vi

    then horizontal equation
    distance=vi*cos45*t put t in there, and solve for vi

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  2. 76

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