1.

Forces \(4\hat{i}-3\hat{j}+7\hat{k}\) and \(-2\hat{i}+2\hat{j}-8\hat{k}\) are acting on a particle and displaced it from the point (5, 7, 1) to (2, 5, -6), then the work done by the force is

A. 25
B. 9
C. 15
D. 7
Answer» D. 7


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