scalors and vectors

• What is a vector quantity?


  A vector is a physical quantity with magnitude and direction.
• What is a scalar quantity?


  A scalar is a physical quantity with magnitude only.
• Why are forces considered vector quantities?


  Because forces have both strength and direction.
• How does the overall force depend when two people push a box from different sides?


  The overall force depends on both the size and direction of their forces.
• What are examples of scalar quantities?


  • Distance
  • Speed
  • Mass
  • Time
  • Temperature
• What does a vector tell you beyond "how much"?


  A vector also tells you "which direction".
• What are examples of vector quantities?


  Examples of vectors include displacement, velocity, acceleration, forces, and momentum.
• How are vectors represented graphically?


  Vectors are represented by arrows, where the length represents magnitude and the direction indicates the vector's direction.
• What are the key operations with vectors?


  • Adding vectors: consider both magnitude and direction.
  • Use the tip-to-tail method.
  • Resultant vector: the single vector that has the same effect as two or more combined.
• What happens when two vectors are in the same direction?


  Their magnitudes add together.
• What happens when two vectors are in opposite directions?


  You subtract the smaller magnitude from the larger magnitude.