Scalar and vector quantities

• Scalar and vector quantities are treated differently in calculations.
• A physical quantity is something that can be measured.
• Scalar quantities only have a magnitude, not a size or direction
• Examples of scalar quantities include: temperature, mass, energy, distance, speed, and density.
• The sum of scalar quantities can be found by adding their values together.
• Scalar quantities can be subtracted by subtracting one value from another.