Another service from Omega

A Lecture Given by Subrata Mukherjee at Cornell on Jan 23 1995

Introduction to Vectors


We have three types of physical quantities:
  1. Scalars- Magnitude Only. e.g. Mass, Length and Time.
  2. Vectors- Magnitude and Direction. e.g. Velocity and Force.
  3. Tensors- Not covered here.

The simplest way to differentiate vectors from scalars is to take Speed vs. Velocity.

In the path shown above, assume that the particle has a fixed speed. While it's speed does not change, it does have an acceleration, as the direction changes constanly.

Notes written by Lawrence C. Weintraub 1/24/95