Physical Sciences

Newtons first law

A body will remain in its state of rest or constant velocity unless a non-zero resultant/ net force acts upon it

Inertia

the resistance of an object to any change in its state of motion

Newtons Second law

when a resultant or net force 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

Newtons 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

Free Fall

motion of an object under the influence of gravitational force only

Projectile

an object which has been given an initial velocity and on which the only force acting is the gravitational force

Isolated system

a system on which the net external force is zero

Principle of conservation of linear momentum

the total linear momentum of an isolated system remains constant (is conserved)

Principle of conservation of mechanical energy

the total mechanical energy in an isolated system remains constant

Doppler effect

the change in frequency (or pitch) of the sound detected by the listener, because the sound source and the listener have different velocities relative to the medium of sound propagation.

Coulombs law

the magnitude of the electrostatic force exerted by one point charge on another point charge 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 of space in which an electric charge experiences a force

Ohm’s Law

the potential difference across a conductor is directly proportional to the current of the conductor at a

work - energy theorem

the work done on an object by a net force is equal to the change in the object’s kinetic energy