Lecture 2

Question 1

What is the difference between scalar and vector units?

Answer 1

Scalar- only has magnitude.

Vector- has both magnitude and direction.

Question 2

What does the length of the line/vector tell you?

Answer 2

The magnitude of the vector.

Question 3

How do you add vectors?

Answer 3

The tip to tail method is used. It is important to pay attention to direction. (+/- or up or down).

Question 4

When looking for a resultant vector, what is a method that can be used.

Answer 4

Split the components into horizontal and vertical components. Even if its not a right angle triangle right away, use SOHCAHTOA and make one.

Question 5

Write the steps for the resultant vectors.

Answer 5

1. Resolve each vector into its H and V components.
2. Add the horizontal components together.
3. Add the vertical components together.
4. Use the Pythagorean Theorem to determine the resultant.

Question 6

Can you find any angle?

Answer 6

Yes, just have to specify direction.