If i, j, and k are unit vectors along x, y, and z-axis, then k x j =?
Correct answer: A. Option A
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
The cross product (k x j) of the unit vectors along the z-axis (k) and the y-axis (j) can be determined using the right-hand rule. The right-hand rule states that if you point your index finger along the first vector k, your middle finger along the second vector j, then your thumb, pointing in the direction of the cross product, will be along the negative x-axis.
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About Vectors and Equilibrium
Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
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