Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

adga

  • 3 years ago

At the end of lecture 19, Professor Aroux remarks that since F and T are parallel vectors, the dot product is just the length of F. Why is that true?

  • This Question is Open
  1. adga
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I, believe he said that it is the length of F.

  2. sunsunsun1225
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I know now. That is because T is a unit vector. Recall the equation \[dr/dt=T(ds/dt)\] the left side is velocity, ds/dt is speed or magnitude, and T is unit vector that specifies direction. Since F and T are parallel and T is unit vector (all entries equal to 1), the dot product is F itself. Hope that helps

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy