physics

• Physics


  The branch of science that deals with the properties, behavior and interaction between matter and energy
• Subdivisions of Physics


  • Newtonian Mechanics/Classical Mechanics
  • Quantum Mechanics
  • Energy and its Transformations
  • Waves
  • Electricity and Magnetism
  • Modern Physics
• Newtonian Mechanics/Classical Mechanics


  Study of forces on bodies
• Quantum Mechanics


  Study of atomic and sub-atomic system and their interaction with radiation
• Energy and its Transformations

  Shows the different forms of energy in bodies/objects/climats and how these are conserved
• Waves


  Tackles various kinds of waves which serve as a mechanism for energy transfer
• Electricity and Magnetism

  Shows practicality of physics to very useful devices we have for communication, storage of information and even household/business management
• Modern Physics


  Studies the very heart of matter (atoms and sub-atomic particles)
• Measurements


  A tool of observation and research. Measurements tell how far, how large, how many, and how much
• Basic Quantities


  • Length
  • Time
  • Mass
• Derived Measurements


  • Force
  • Volume
  • Density
• Scientific Notation


  Simplified notation for very small or very large numbers
• Scalar


  A quantity characterized by a positive or negative number
• Scalar quantities


  • length, time, distance, mass, speed, volume, energy, temperature
• Vector


  A quantity that has both magnitude and direction. It is graphically represented by an arrow, which is used to define its magnitude, direction, and sense
• Vector quantities


  • displacement, force, velocity, work, acceleration, momentum
• Distance


  A scalar quantity which refers "how much ground an object as covered during its motion"
• Displacement


  A vector quantity which refers "how fast an object changes its position"
• Speed


  A scalar quantity which refers to the "rate at which an object changes its position
• Velocity


  A vector quantity which refers to the "rate at which an object changes its position"
• Vector Addition


  Direction is taken into account; the sum is called the resultant vector, R
• Newton's Three Laws of Motion
• First Law: Law of Inertia


  An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force
• Second Law of Motion: Law of Acceleration


  The acceleration of an object depends on the mass of the object and the amount of force applied
• Third Law of Motion: Law of Action-Reaction


  Whenever one object exerts a force on another object, the second object exerts an equal and opposite on the first