Square root

The answer that you submitted suggests that you are close to understanding how to determine the magnitude of a vector because your answer to part (c) is the magnitude squared of the model answer. Review your course notes or your textbook for the definition of the magnitude of a two-dimensional vector and try the Vectors demo question again.

If this does not match your situation, please visit the feedback discussion page for the Vectors demo question and give us some feedback or try the question again.