# FHSST Physics/Vectors/Summary

< FHSST Physics | Vectors

# Summary of Important Quantities, Equations and Concepts[edit]

**Table 3.1:**Summary of the symbols and units of the quantities used in Vectors

Quantity | Symbol | S.I. Units | Direction | ||

Displacement | m |
yes | |||

Velocity | m.s^{−1} |
yes | |||

Distance | d |
m |
- | ||

Speed | v |
m.s^{−1} |
- | ||

Acceleration | m.s^{−2} |
yes |

**Vector**: A vector is a measurement which has both magnitude and direction.

**Displacement**: Displacement is a vector with direction pointing from some initial (starting) point to some final (end) point and whose magnitude is the straight-line distance from the starting point to the final point.

**Distance**: The distance traveled is the length of your actual path.

**Velocity**: Velocity is the rate of change of displacement with respect to time.

**Acceleration**: Acceleration is the rate of change of velocity with respect to time.

**Resultant**: The resultant of a number of vectors is the single vector whose effect is the same as the individual vectors acting together