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# Kinematics (velocity & acceleration graphs)

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 »