alleryMultiplying vector A by 2 gives a vector that is:
ASame direction, twice as long
BOpposite, twice as long
CSame direction, half as long
DRotated by 90 degrees
Answer & Solution
Correct answer: A. Same direction, twice as long
1. A positive number keeps the direction.
2. It scales the magnitude by that number.
3. So 2A is twice as long, same way.
_Source: syllabus Physics Part I, Chapter 4, Motion in a Plane._
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