Forces

• Force - A force is a push or a pull acting upon an object as a result of its interaction with another object
• • Force can cause an object to move
  • Force can change an object's speed
  • It can also change direction
  • It can change the shape of an object.
• • Force has magnitude and direction.
  • Magnitude is the strength of the force applied to an object. It can be measured in Newton (N).
  • The direction tells which way the force is acting.
• Measuring force is expressed in terms of newton (N.)
• Contact forces - with physical contact, touching
• Non-contact forces - without physical contact, at a distance.
• Contact forces:

  • Applied force
  • Normal force
  • Frictional force
  • Air Resistance force
  • Buoyant force
• Non-Contact Forces

  • Gravitational force
  • Magnetic force
  • Electrical force
• Balanced force

  • Balanced forces do not change the way an object moves. Net force cancels out or becomes zero.
• Net Forces - Net force is the combination of forces acting on a certain object. It determines whether an object starts moving speed up, stop moving, or change directions.
• When do we observe equilibriums? - An object is an equilibrium, when forces acting on it is balanced.
• Objects at Rest - Objects that are not moving will remain motionless
• Objects in Motion - moving objects equilibrium will continue to move at a constant speed in a straight line.
• The net force is computed by looking at the opposite forces.
• Unbalanced forces - If a force acting in one direction is greater than the other, the force is unbalanced. Unbalanced forces can make to move more faster or slower change direction.