$\mathrm{}\mathrm{}$The average force exerted by a bat on a baseball during the time of contact, which lasts $2\mathrm{.}0010-3s,6660N.$ The mass of the baseball is $0\mathrm{.}145kg.$ and its speed just before the bat hits it is $33\mathrm{.}5\frac{m}{s}.$ What is the velocity of the ball when it leaves the bat? Assume that the ball leaves the bat along the same line of direction from which it is pitched. 

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