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11 August, 22:33

An eagle is flying horizontally at a speed of 4.10 m/s when the fish in her talons wiggles loose and falls into the lake 6.20 m below. Calculate the velocity (in m/s) of the fish relative to the water when it hits the water. (Assume that the eagle is flying in the + x-direction and that the + y-direction is up.)

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  1. 11 August, 23:22
    0
    V=11.74m/s, 69.59°

    Explanation:

    From newtons equation of motion, we know that

    V^2 = u^2+2gh

    for the rt

    For the vertical component of the speed

    Vy^2=V0^2 + 2gh

    Vy = the final speed in the vertical axis

    V0 = initial speed, 0m/s

    g = acceleration due to gravity 9.81m/s

    h=height/distance between the eagle and the lake

    Vy^2 = 2*9.81*6.2

    Vy = √121.644

    Vy=11.02m/s

    The resultant speed will be

    V = (Vy^2+Vx^2) ^0.5

    V = (11.02^2+4.1^2) ^0.5

    V=137.7241^0.5

    V=11.74m/s

    Direction

    Tan^-1 (11.02/4.1)

    β=69.59°

    V=11.74m/s, 69.59°

    Answer = 11.74m/s, b°
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