Physics Definitions

• Newtons First Law


  A body will remain in its state of rest or motion at constant velocity unless a non-zero net force acts on it
• Newton’s second law of motion

  when a net force acts on an object, the object will accelerate in the direction of the force and at an acceleration directly proportional to the force and inversely proportional to the mass of the object
• Newtons Third law of motion

  when object A exerts a force on object B, object B simultaneously exerts a force on object A with equal magnitude and opposite direction
• Scalar


  a physical quantity with magnitude only
• Vector

  A physical quantity with magnitude and direction
• Resultant


  a single vector having the same effect as two or more vectors together
• Friction

  the force that opposes the motion of an object and which acts parallel to the surface
• Static friction

  the force that opposes The tendency of motion of a stationary object relative to a surface
• Kinetic friction


  the force that opposes the motion of a moving object relative to a surface
• Newtons Law of Universal Gravitation

  Each particle in the universe attracts every other particle with a gravitational force that’s directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers

  
• Weight 


  The gravitational force in newton exerted by the earth on an object
• Mass


  Amount of matter in an object in kg
• Coulomb‘s Law


  The magnitude of the electrostatic force exerted by two point charges (Q1 & Q2) on each other is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them

  
• Electric field


  a region in space in which an electric charge experiences a force
• Ohms law


  The potential difference across a conductor is directly proportional to the current in the conductor at constant temperature
• Power


  Rate at which work is done or energy is transferred