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20 September, 16:28

Collapse question part Part 4 (d) What is the unit vector in the direction of the spacecraft's velocity? (Express your answer in vector form.)

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  1. 20 September, 19:10
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    unit (v) = [ - 0.199 i - 0.8955 j + 0.39801 k ]

    Explanation:

    Given:

    v = (-23.2, - 104.4, 46.4) m/s

    Above expression describes spacecraft's velocity vector v.

    Find:

    Find unit vector in the direction of spacecraft velocity v.

    Solution:

    Step 1: Compute magnitude of velocity vector.

    mag (v) = sqrt (23.2^2 + 104.4^2 + 46.4^2)

    mag (v) = 116.58 m/s

    Step 2: Compute unit vector unit (v)

    unit (v) = vec (v) / mag (v)

    unit (v) = [ - 23.2 i - 104.4 j + 46.4 k ] / 116.58

    unit (v) = [ - 0.199 i - 0.8955 j + 0.39801 k ]
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