In three dimensional space, the position vector of a point P(a, b, c) is represented by r and is written as _.
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
The position vector, represented as r, can be expressed as r = ai + bj + ck, where i, j, and k are unit vectors along the x-axis, y-axis, and z-axis, respectively. By knowing the components of the position vector, we can easily determine the exact position of the object in three-dimensional space.
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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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