Form 3 Physics Notes Complete for Term 1-3

Linear Motion

• Differentiates between kinematics and dynamics.

• Defines displacement, speed, velocity, and acceleration, providing formulas and worked examples for each.

• Covers motion graphs, including distance-time and velocity-time graphs, and explains how to interpret them to find speed, acceleration, and distance covered.

• Introduces the ticker-timer as a tool for analyzing motion.

• Lists and applies the three equations of linear motion, including their use for motion under gravity (free fall and vertical projection).

Refraction of Light

• Defines refraction and explains the laws of refraction, including Snell’s Law.

• Discusses the refractive index, real and apparent depth, and the conditions for total internal reflection and the critical angle.

• Covers applications of total internal reflection such as in prism periscopes, binoculars, and optical fibres.

Newton’s Laws of Motion

• States and explains Newton’s First Law (Inertia), Second Law (F=ma), and Third Law (Action-Reaction).

• Introduces concepts of momentum, impulse, and the law of conservation of linear momentum, with applications to collisions and rocket propulsion.

• Discusses friction, including the laws of friction and methods of reducing it.

Energy, Work, Power, and Machines

• Defines energy, work, and power, providing their respective formulas and SI units.

• Explains the principle of conservation of energy.

• Introduces simple machines, defining Mechanical Advantage (M.A.), Velocity Ratio (V.R.), and efficiency.

• Covers various types of machines, including levers, pulley systems, the wheel and axle, the inclined plane, the screw, and hydraulic machines.

Current Electricity

• Defines electric current and potential difference (p.d.).

• States Ohm’s Law (V=IR) and distinguishes between ohmic and non-ohmic conductors.

• Discusses factors affecting the resistance of a conductor and the concept of resistivity.

• Explains series and parallel combinations of resistors, providing formulas for calculating equivalent resistance.

• Defines electromotive force (e.m.f.) and internal resistance of a cell.

Waves II

• Explores the properties of waves, including rectilinear propagation, reflection, refraction, diffraction, and interference (constructive and destructive).

• The ripple tank is mentioned as a tool to demonstrate these properties.

• Introduces stationary (standing) waves.

Electrostatics II

• Describes electric fields and their representation using lines of force.

• Explains charge distribution on conductors and action at sharp points, leading to phenomena like corona discharge and the principle behind the lightning arrestor.

• Introduces capacitors, defining capacitance (C=Q/V), and discussing factors affecting capacitance and combinations of capacitors in series and parallel.

Heating Effect of an Electric Current

• Details the factors affecting heat produced by an electric current.

• Provides formulas for electrical energy and power (P=VI, P=I²R).

• Discusses applications of the heating effect, such as in filament lamps, fluorescent lamps, electric heaters, and fuses.

Quantity of Heat

The Gas Laws

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