Physics

A pelican flying along a horizontal path drops a fish from a height of 3.3 m. The fish travels 8.2 m horizontally before it hits the water below.
What was the pelican's initial speed? The acceleration of gravity is 9.81 m/s^.
Answer in units of m/s.

If the pelican was traveling at the same speed but was only 1.6 m above the water, how far would the fish travel horizontally before hitting the water below?
Answer in units of m.

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  1. 1. Dx = Xo*Tf = 8.2 m.

    h = 0.5g*Tf^2 = 3.3 m.
    4.9*Tf^2 = 3.3.
    Tf^2 = 0.673.
    Tf = 0.821 s. = Fall time.

    Xo*0.821 = 8.2 m.
    Xo = 10.0 m/s.

    2. Dx = Xo*Tf.

    h = 0.5g*Tf^2 = 1.6 m.
    4.9*Tf^2 = 1.6.
    Tf^2 = 0.327.
    Tf = 0.571 s.

    Dx = 10m/s * 0.571s. = 5.71 m.

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