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PHYSICS IGCSE (combined science) GRADED A+

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PHYSICS IGCSE (combined science) GRADED A+ 1. Speed Formula - Speed is calculated as distance divided by time. 2. Mass - Mass is a measure of the amount of matter an object or person possesses. 3. Weight - Weight is a force measured in newtons (N), calculated as mass multiplied by gravitation...

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  • July 9, 2024
  • 16
  • 2023/2024
  • Exam (elaborations)
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  • physics igcse combined science graded a

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  • PHYSICS IGCSE GRADED A+
  • PHYSICS IGCSE GRADED A+
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PHYSICS IGCSE (combined science) GRADED A+
1. Speed Formula



- Speed is calculated as distance divided by time.




2. Mass



- Mass is a measure of the amount of matter an object or person possesses.




3. Weight



- Weight is a force measured in newtons (N), calculated as mass multiplied by gravitational force.




4. Density



- Density is a measure of how much mass is contained in a given volume (g/cm³), calculated as mass


divided by volume.

,5. What Can a Force Change?



- A force can change the shape, size, direction of motion, and speed of an object.




6. Hooke's Law



- Hooke's Law states that the extension of an elastic object is directly proportional to the force applied


to it, expressed as \( F = kx \), where \( F \) is force, \( k \) is a constant, and \( x \) is extension.




7. Limit of Proportionality



- The limit of proportionality is the point beyond which Hooke's Law no longer applies when stretching


a material. The elastic limit is when the material becomes permanently stretched.




8. Power



- Power is measured in watts (W), indicating the rate at which work is done or energy is transferred.

, 9. Energy and Work



- Energy and work are measured in joules (J).




10. Kinetic Energy



- Kinetic energy is the energy of motion, calculated as \( \text{K.E} = \frac{1}{2}mv^2 \), where mass \(


m \) is in kilograms and velocity \( v \) is in meters per second.




11. Potential Energy



- Potential energy is stored energy ready to be used. Gravitational potential energy is due to gravity


and is calculated as \( \text{P.E} = mgh \), where mass \( m \) is in kilograms, \( g \) is gravitational


acceleration (N/kg), and \( h \) is height in meters.




12. Work

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