Class 9 Physics practice by chapter

Motion

• Equations of motion numericals
• Average speed, velocity and km/h ↔ m/s
• Reading velocity–time graphs
• Speed in uniform circular motion

Force and Laws of Motion

• Newton's second law and momentum
• Conservation of momentum and recoil
• Net force and acceleration

Work and Energy

• Work, kinetic energy and potential energy
• Kinetic and potential energy
• Power and the kilowatt-hour
• Work done by a force at an angle

Gravitation

• Pressure and thrust
• Universal law of gravitation
• Free fall
• Density, relative density and buoyancy

Sound

• Wave speed, frequency and wavelength
• Frequency, time period and audible range
• Echoes and SONAR

About these answers

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