Physical Science Grade 11
Resultant vector
The vector sum of two or more vectors
Normal Force
The force which a surface exerts on an object in contact with it and it perpendicular to the surface
Fictional force
The force that opposes the motion of an object and which acts parallel to the surface
Static fictional force
The force that opposes the tendency of motion of a stationary object relative to the surface
Kinetic frictional force
The force that opposes the motion of a moving object relative to the surface
Equilibrium
The net resultant force acting is 0N
Newton's first law of motion
A body will remain in its state of rest or motion at constant velocity unless a non-zero resultant force acts on it
Newton's second law
When a resultany acts on an object the object will accelerate in the direction of the force at an acceleration directly proportional to the force and inversely proportional to the mass of the object
Newton's third law
When object A exerts a force on object B, object B simultaneously exerts an oppositely directed force of equal magnitude on object A
Coulomb's law
The magnitude of the electrostatic force exerted by one point charge (Q1) on another point charge (Q2) is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance (r) between them
Electric field
A region of space in which an electric charge experiences a force
EMF
the maximum energy provided by a battery per unit charge pass through it
Power
Rate at which work is done
Ohm's law
The potential difference across a conductor is directly proportional to the current in the conductor at constant temperature
Faradaay's law of electromagnetic induction
The magnitude of the induced EMF across the ends of a conductor is directly proportional to the rate of change in magnetic flux linkage with the conductor