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Physics (Class 9) Roadmap
Learn Physics (Class 9) step by step — 77 free lessons with spaced repetition and active recall on RetainHQ, so what you study actually sticks.
Lessons
- Apply 2as = v^2 - u^2
- Apply acceleration formula
- Apply average speed formula
- Apply equations of motion for free fall
- Apply F = G m1 m2 / r^2
- Apply F = ma
- Apply kinetic energy formula
- Apply potential energy formula
- Apply power formula
- Apply Pressure = Force / Area
- Apply s = ut + 1/2 at^2
- Apply v = u + at
- Apply wave speed equation
- Calculate area of triangle and rectangle
- Calculate average velocity
- Calculate distance using echo
- Calculate mechanical energy of free falling object
- Calculate speed in circular motion
- Calculate the slope of a straight line
- Calculate weight on earth and moon
- Convert commercial unit of energy
- Convert km/h to m/s
- Define acceleration
- Define average speed
- Define buoyant force
- Define displacement
- Define distance
- Define energy
- Define free fall
- Define frequency, time period, and wavelength
- Define gravitational potential energy
- Define inertia
- Define momentum
- Define power
- Define pressure
- Define relative density
- Define thrust
- Define velocity
- Define work done by a constant force
- Describe applications of multiple reflections of sound
- Determine if an object floats or sinks
- Determine if displacement is zero
- Distinguish balanced and unbalanced forces
- Distinguish distance from displacement
- Distinguish longitudinal and transverse waves
- Distinguish mass and weight
- Distinguish speed from velocity
- Distinguish uniform and non-uniform acceleration
- Identify action-reaction pairs
- Identify sound as a mechanical wave
- Identify uniform circular motion as accelerated
- Identify zero work conditions
- Interpret negative work
- Interpret sign of acceleration
- Interpret stationary object on distance-time graph
- Interpret uniform acceleration on velocity-time graph
- Interpret uniform motion on distance-time graph
- Interpret uniform velocity on velocity-time graph
- Read acceleration off a velocity-time graph
- Read coordinates from a line graph
- Read displacement off a velocity-time graph
- Read speed off a distance-time graph
- Rearrange linear algebraic equations
- Relate inertia to mass
- Relate loudness to amplitude
- Relate pitch to frequency
- Relate work to change in kinetic energy
- Select correct equation of motion
- State acceleration due to gravity (g)
- State Archimedes principle
- State law of conservation of energy
- State laws of reflection of sound
- State Newton's first law of motion
- State Newton's second law of motion
- State Newton's third law of motion
- State the audible range for humans
- State the universal law of gravitation