|
Velocity is often represented by
an arrow called a vector pointing in the direction of the movement.
The drawn arrow obeys the following rules:
| How
to represent a vector |
| Where is it drawn? |
On the moving body |
| How long is it? |
To scale. The greater the
speed, the longer the vector |
| What shape is it? |
It is always straight |
If
the movement is rectilinear, it is on the straight line of the
movement
If the movement
is curvilinear it is a tangent to the trajectory
|
| Where does the arrow
point? |
In the direction of the
movement |
Velocity is represented by a vector, speed by a number (which can be positive or negative). | 
