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A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 7.84 s. What is its initial velocity? Neglect air resistance.

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  • physics -

    A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of
    8.6 s.
    What is its initial velocity? Neglect air resistance. (Indicate the direction with the sign of your answer.)

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