Forces and their interactions

• Scalar and Vector Quantities

  • Scalar quantities have Magnitude only.
  • Vector quantities have Magnitude and an associated Direction
• Examples of Contact Forces

  • Friction, Air Resistance, Tension and Normal contact force
  • Force is a Vector quantity
• Examples of Non-Contact Forces

  • Gravitational force, Electrostatic force and Magnetic force
• What is Resultant Force?

  • A single force that has the same effect as all the original forces acting together