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1. |
Constant forces \(\rm \vec P\) = 2î - 5ĵ + 6k̂ and \(\rm \vec Q\) = -î + 2ĵ - k̂ act on a particle. The work done when the particle is displaced from A whose position vector is 4î - 3ĵ - 2k̂, to B whose position vector is 6î + ĵ - 3k̂, is: |
A. | 10 units. |
B. | -15 units. |
C. | -50 units. |
D. | 25 units. |
Answer» C. -50 units. | |