Forces of 2 1 and 4 units act through the origin along and


Question: Forces of 2, 1, and 4 units act through the origin along, and in the positive directions of, the respective x-, y-, and z-axes. Find the vector sum S of these forces, the magnitude |S| of the sum of the vectors, and a unit vector in the direction of S.

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Mathematics: Forces of 2 1 and 4 units act through the origin along and
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