Physics

Resultant

A single vector having the same respect as two or more vectors together

Normal force

The force which a surface exerts on an object in contact with its and which is perpendicular to the surface

Frictional force

The force that opposes the motion of an object and which acts parallel to the surface

Static fractional force

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

Newton's first law of motion

A body will remain in its state of rest or motion at a constant velocity unless a non-zero resultant force act on it

Inertia

The resistance of an object to any change in its state of Motion

Newton's second law of motion

When a resultant force act 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 of motion

When object A exerts a force on object B object B simultaneously exertsan oppositely directed force of equal magnitude on object A

Newton's law of universal gravity

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

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

Electric field at a point

the electrostatic Force experienced per unit positive charge placed at that point

Ohms law

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

Power

The rat at which work is done

Emf

The maximum energy provided by a battery per unit charge passing through it

Faradays law

The magnitude of the induced EMF across the ends of a conductor is directly proportional to the rate of charge in the magnetic flux linkage with the conductor

Weightlessness

The sensation when all contact forces are removed