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9 June, 03:11

Una persona realiza los siguientes desplazamientos sobre una línea recta: primero camina 52 metros a la derecha, después camina 31 metros hacia la izquierda, luego camina 48 metros hacia la derecha, nuevamente camina 55 metros hacia la izquierda, para finalmente caminar 22 metros hacia la derecha. Determinar: a) El desplazamiento de la persona b) El camino recorrido por la persona. c) La velocidad de la persona, si demora 12 segundos en describir esa trayectoria

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  1. 9 June, 06:13
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    a) d = 36 m with direction to the right,

    b) D = 208 m, c) v = 3.6 m / s

    to the right

    Explanation:

    a) This exercise asks us to calculate the displacement that is a vector

    d = d₁ + d₂ + d₃ + d₄

    let's assign the right shift as positive

    d₁ = 52 m

    d₂ = - 31m

    d₃ = 48 m

    d₄ = - 55 m

    d₅ = 22m

    we substitute

    d = 52 - 31 + 48 - 55 + 22

    d = 36 m

    with direction to the right

    b) they ask to calculate the distance traveled, which is the magnitude of the distance traveled

    D = d₁ + d₂ + d₃ + d₄ + d₅

    where the quantities are in absolute value, I mean positive

    D = 52 + 31 48 + 55 + 22

    D = 208 m

    c) the average speed that is the displacement between the time it takes in this magnitude

    v = d / t

    v = 36/10

    v = 3.6 m / s

    to the right
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