ADEKOYA

Introduction Study of motion is divided into two; Kinematics Dynamics In kinematics forces causing motion are disregarded while dynamics deals with motion of objects and the forces causing them. Displacement… Read More »LINEAR MOTION

Sound is an important example of a longitudinal wave which is composed of both compressions and rarefactions. The frequency range in which compressional disturbances occur is called the sonic spectrum… Read More »SOUND

What is a wave?. A wave is simply a disturbance that moves through a medium . Other waves do not require a medium to travel i.e. they can travel in… Read More »WAVES

Hooke’s law states that “the extension of a spring is proportional to the applied force, provided that the force is not large enough to deform the spring permanently”. Mathematically expressed… Read More »HOOKES LAW

Concave and convex mirrors They are also known as spherical mirrors and are formed when a spherical glass is silvered . If the inside is silvered a convex or diverging… Read More »REFLECTION AT CURVED SURFACES

Centre of gravity Centre of gravity or C.G is the point of balance of a body in which the total weight of the body seems to act through. For regular… Read More »EQUILIBRIUM AND CENTRE OF GRAVITY

Turning Effects The turning effect of a body is called the moment of that force. The turning effect produced depends on both the size of the force and the distance… Read More »TURNING EFFECT OF A FORCE

Introduction Magnets are substances that are able to attract and hold items. Lodestone is the only known natural magnet which was discovered by the Chinese 2,000 years ago. Other magnets… Read More »MAGNETISM

States of matter Matter is anything that occupies space. Matter exists in three states: solids, liquids and gases. Matter can be changed in various ways which includes physical, chemical and… Read More »PARTICULATE NATURE OF MATTER

Force is a push or a pull. Force is therefore that which changes a body’s state of motion or shape. The SI unit for force is Newton (N). It is… Read More »FORCES

MEASUREMENT.

In order to measure we need to know or define the quantity to be measured and the units for measuring it.

In 1971 a system known as the International System of Units (Systeme’ Internationale) and seven basic units were agreed upon as follows. Other quantities can be obtained from these basic quantities and are referred to as derived quantities.