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31 December, 02:00

An ambitious hiker walks 25 km west and then 35 km south in a day. find the magnitude and direction of the hikers resultant displacement (relative to due west).

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  1. 31 December, 02:27
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    Refer to the diagram shown below.

    The resultant displacement, d, is the vector sum of distances traveled west and south.

    The magnitude of d is

    d = √ (25² + 35²) = 43.012 km

    The angle that d makes below due west (or south of west) s

    θ = tan⁻¹ (35/25) = 54.5°

    Answer:

    The resultant displacement is 43.0 km, at an angle of 54.5° south relative to due west.
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