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10 March, 18:46

Dona rolls a marble with a speed of 5.0/m/s across a level table that is 1.6m above the floor. Upon reaching the edge of the table it follows a parabolic path to the floor. How far does the marble travel in the x direction

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  1. 10 March, 22:15
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    2.9 m

    Explanation:

    First find the time it takes to reach the floor.

    y = y₀ + v₀ t + ½ at²

    (0 m) = (1.6 m) + (0 m/s) t + ½ (-9.8 m/s²) t²

    t = 0.571 s

    Next, find the distance it travels in that time.

    x = x₀ + v₀ t + ½ at²

    x = (0 m) + (5.0 m/s) (0.571 s) + ½ (0 m/s²) (0.571 s) ²

    x = 2.86 m

    Rounded to two significant figures, the marble travels 2.9 meters in the x direction.
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