Class 9
Physics
STUDY MATERIAL
MOTION
Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, equations of motion by graphical method; elementary idea of uniform circular motion.
CLICK HERE
Force and Newton’s laws
Force and Motion, Newton’s Laws of Motion, Action and reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum.
CLICK HERE
Gravitation
Gravitation; universal law of gravitation, force of gravitation of the earth (gravity), acceleration due to gravity; mass and weight; free fall.
CLICK HERE
Floatation
Thrust and pressure. Archimedes’ principle, buoyancy, elementary idea of relative density.
CLICK HERE
Work, energy and power
Work done by a force, energy, power; kinetic and potential energy; law of conservation of energy.
For Short Notes
CLICK HERE
For Complete Study Notes
CLICK HERE
Sound
Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR. Structure of the human ear (auditory aspect only).
For Short Notes
CLICK HERE
For Complete Study Notes
CLICK HERE
