Asked in Premeth — Coordination and Control, Vectors and Equilibrium

Question is given below:

Correct answer: A. 0

  • A. 0
  • B. 1
  • C. -1
  • D. 1/2

Explanation

The cross product of two parallel vectors is always zero because the sine of the angle between them is zero. In this case, i × i = |i||i| sin(0) = 0. This means that when dealing with parallel vectors, the resulting cross product will always be zero, as seen in Option A. Options B, C, and D are incorrect because they do not consider the fact that parallel vectors have a sine of 0, resulting in a cross product of 0.

Written and checked by , contributorLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

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.

Practise Vectors and Equilibrium

431 free Vectors and Equilibrium MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Physics questions like this

Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

More Addition of Vectors questions