Velocity and acceleration are defined as they were in one dimension:
| v | = |
|
| a | = |
|
Position is indicated by the vector r. Displacement still represents distance traveled and specifies the direction.
If you start at position ro and move to position r, your displacement Δr is
Velocity and acceleration are defined as they were in one dimension:
| v | = |
|
| a | = |
|