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If you throw a ball straight upward at a speed of 24 m/s, how long will it take to reach zero speed? How long will it take to return to its starting point? How fast will it be going when it returns to its starting point?

  • Physics - ,

    v = v0 - 1/2*g*t^2

    where v is speed as a function of time, v0 is the inital speed, and g is the acceleration due to gravity

    v = 24 - 4.9*t^2 = 0

    Solve for t

    When it returns to its starting point, the time will be 2*t, using t from the first question. Calculate v at this time (It should be 24 m/s)

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