physics

A ball player wishes to determine her pitching speed by throwing a ball horizontally from an elevation of 3.0 m above the ground. She sees the ball land 15 m down the range. What is the speed of the ball as it leaves her hand?

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  1. Calculate the time it takes the ball to fall 3 meters when thrown horizontally.

    That time, t, is given by the formula
    3.0 = (g/2) t^2. Solve for t.

    After you have calculated t, you can get the speed of the ball using
    V = (15 m)/t.

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