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2 June, 14:31

An airplane in a holding pattern flies at constant altitude along a circular path of radius 3.38 km. If the airplane rounds half the circle in 156 s, determine the following. HINT (a) Determine the magnitude of the airplane's displacement during the given time (in m). m (b) Determine the magnitude of the airplane's average velocity during the given time (in m/s). m/s (c) What is the airplane's average speed during the same time interval (in m/s)

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  1. 2 June, 14:56
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    a) 6076 m

    b) 43.33 m/s

    c) 68 m/s

    Explanation:

    (a) If the airplane rounds half the circle in 156s, its displacement is the circle diameter in 156s, or twice the circle's radius

    s = 2r = 2 * 3.38km = 6.76 km or 6760 m

    (b) The average velocity would be displacement over unit of time

    v = s/t = 6760 / 156 = 43.33 m/s

    (c) The length of the chord it's swept in 156s is half of the circle perimeter

    c = πr = π3.38 = 10.62 km or 10620 m

    The airplane average speed is its chord length over a unit of time

    c / t = c / 156 = 68 m/s
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