Newton’s laws of motion

MOTION: Motion is the change in position of an object. Types of Motion 1.Translatory motion 2.Rotational motion 3.Random motion 4.Oscillatory (vibrating) motion Translatory Motion Is the motion movement of an object from one position to another. e.g. (i) A wheel of a moving car (ii) A falling stone (iii) A coin rolling down a plane […]

Moment & Equilibrium

MOMENT Moment: Can be defined as the turning or rotating effect of an object. Moment of a Force about a point This can be defined as the product of the force and the perpendicular distances from the point to the line of action of the force. The point where a body is caused to rotate […]


PRESSURE This can be defined as the force acting normally per unit area. Unit of pressure is or pascal Pressure in solid Pressure in a solid object Varies inversely as surface area Pressure when area increases pressure decreases when area decreases pressure increases Characteristics of solid pressure – pressure increases as force increases and vice […]


FRICTION This is the force acting along the surface of separation of two bodies in contact and tends to oppose the motion of one over the other. Types of friction – Solid friction – Fluid friction(liquid or gas friction) Types of solid friction – Limiting friction – Kinetic friction – Static friction – rolling friction […]


LABOUR: Labour can be defined as all human efforts of any land, either skilled or unskilled, mental or manual, directed towards the production of goods and services. MARKET It can be defined as any point of contacts where transactions takes places. LABOUR MARKET Is defined as a market which buyers and sellers of labour are […]


Firm: A firm is an independently administered business unit which carries out productive activities. A firm organizes its production in a plant. An industry: Is the ambulation of a number of firms producing similar commodities or services for the same market. An Organization: is an entity comprising multiple people, such as an institution or an […]

cell structure

Definition: Cell can be defined as the structural and functional basic unit of life. The study of a cell is known as cytology. A cell contains protoplasm recognized as the physical basis of life. Cell theory 1. All living organisms are composed of one or more cells 2. A cell is the basic unit of […]

Separation Techniques

Definition: Separation technique is a method used or applied in separating constituents of mixtures. Separation of constituent mixtures depends on the following physical properties of mixtures namely 1. Difference in sizes 2. Difference in solubility 3. Difference in density 4. Difference in the speed of constituent in a medium 5. Difference in boiling point and […]