If a vector is multiplied by a negative number, then its direction will
Correct answer: A. Be reversed.
- A. Be reversed.
- B. Be changed by 45o
- C. Be changed by 90o
- D. Remain the same.
Explanation
When a vector is multiplied by a negative number, its direction is reversed. This is equivalent to rotating the vector by 180o, but more simply described as a reversal of direction. Hence, Option A is correct. Options B and C suggest specific angular changes that do not occur as a result of such multiplication, while Option D incorrectly states that the direction remains unchanged.
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About Addition of Vectors
Vector addition combines directed quantities using the head-to-tail, parallelogram and component methods. Work includes finding the resultant magnitude and direction for two or more vectors, resolving vectors into perpendicular components, and distinguishing vector addition from scalar addition, where direction has no role.
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