Explanation

A vector is a quantity that has:

• Magnitude (size or length)

• Direction

This is different from a scalar, which has only magnitude.

Examples:

• Scalar: distance, speed, temperature

• Vector: displacement, velocity, force

Vectors are often drawn as arrows:

• The length of the arrow = magnitude

• The direction the arrow points = direction

Vectors can be written as:

• ⟨x, y⟩

• Or using bold letters, like v

Quiz (5 Questions)

1. What two things define a vector?

2. Is speed a vector or scalar?

3. Is velocity a vector or scalar?

4. What does the arrow length represent?

5. Do vectors have direction?

Answer Key

1. Magnitude and direction

2. Scalar

3. Vector

4. Magnitude

5. Yes