Kevin was setting the table for thanksgiving dinner at his house. He had bought different set of knives spoons and forks from th
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C is correct. The work-force relation is given by W=F·d, where F is force vector, and d is the displacement vector. The dot is the dot product, which is a measure of how parallel the two vectors are. It can be restated as the product of two vector magnitudes times the cosine of the angle between them. Therefore work is a scalar, not a vector, since the dot product returns a scalar.
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Explanation:
sin^2 60° = ( \|3 / 2 ) ^2 = 3 / 4.