# Kinematics

**Kinematics** is the study
of motion.

It is not the same as
**kinetics**, which involves the action of forces to
change the motion of a body.

In this section we will be
concentrating on the **graphs** of bodies in motion. It
is important for your understanding of **calculus**.

## The Difference Between Distance and Displacement

**Distance**
normally refers to the total distance an object moves
during a particular journey.

**Displacement**
refers to the distance from the starting point at a
particular instant in time. We normally use *s* for
displacement (which is pretty silly, since *s* looks
like it should stand for *speed*, but doesn't).

## In this Chapter

1. Velocity (s-t) Graphs - where we look at how to graph simple journeys (straight line)

2. Acceleration (v-t) Graphs - where we learn the definition of acceleration and how to draw simple graphs

3. Kinematics Exercises - involving straight-line graphs

We begin the chapter with the definition of velocity »

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