GCSE Physics (Triple) Edexcel
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69 topics in 7 modules
☑️ Motion, Forces and Conservation of Energy 12 topics
- Motion and Forces: Distance, Displacement, Speed and Velocity
- Motion and Forces: Acceleration
- Motion and Forces: Distance/Time Graphs
- Motion and Forces: Velocity/Time Graphs
- Motion and Forces: Weight and Circular Motion
- Motion and Forces: Inertia and Newton's Third Law
- Motion and Forces: Momentum
- Motion and Forces: Stopping Distances and Reaction Times
- Conservation of Energy: Energy Stores
- Conservation of Energy: Transferring Energy
- Conservation of Energy: Efficiency
- Conservation of Energy: Energy Resources
☑️ Waves and the Electromagnetic Spectrum 12 topics
- Wave Basics
- Waves and the EM Spectrum: Sound
- Waves and the EM Spectrum: Ultrasound
- Waves and the EM Spectrum: Infrasound and Seismic Waves
- Waves and the EM Spectrum: Reflection
- Waves and the EM Spectrum: Refraction
- Waves and the EM Spectrum: Visible Light and Colour
- Waves and the EM Spectrum: Lenses
- Waves and the EM Spectrum: Electromagnetic Waves
- Waves and the EM Spectrum: Emitting and Absorbing EM Radiation
- Waves and the EM Spectrum: EM Waves for Communication
- Waves and the EM Spectrum: Microwaves and Infrared
☑️ Radioactivity and Astronomy 14 topics
- Radioactivity: The Model of the Atom
- Radioactivity: Electron Energy Levels
- Radioactivity: Isotopes and Nuclear Radiation
- Radioactivity: Nuclear Equations
- Radioactivity: Half-Life
- Radioactivity: Background Radiation and Contamination
- Radioactivity: Uses of Radiation
- Radioactivity: PET Scanning and Radiotherapy
- Radioactivity: Nuclear Fission and Nuclear Power
- Astronomy: The Solar System and Gravity
- Astronomy: Changing Ideas about the Universe
- Astronomy: Red-Shift
- Astronomy: The Life Cycle of Stars
- Astronomy: Looking into Space
☑️ Forces and Energy 4 topics
- Forces and Energy: Energy Transfers and Systems
- Forces and Energy: Work Done and Power
- Forces and Energy: Forces
- Forces and Energy: Moments
☑️ Electricity and Circuits 8 topics
- Electricity and Circuits: Current and Circuits
- Electricity and Circuits: Potential Difference and Resistance
- Electricity and Circuits: Circuit Devices
- Electricity and Circuits: Series and Parallel Circuits
- Electricity and Circuits: Energy in Circuits
- Electricity and Circuits: Power in Circuits
- Electricity and Circuits: Electricity in the Home
- Electricity and Circuits: Fuses and Earthing
☑️ Electric and Magnetic Fields 9 topics
- Electric and Magnetic Fields: Static Electricity
- Electric and Magnetic Fields: Electric Fields
- Electric and Magnetic Fields: Magnets and Magnetic Fields
- Electric and Magnetic Fields: Permanent and Induced Magnets
- Electric and Magnetic Fields: Electromagnetism and the Motor Effect
- Electric and Magnetic Fields: Motors and Solenoids
- Electric and Magnetic Fields: Electromagnetic Induction in Transformers
- Electric and Magnetic Fields: Generators, Microphones and Loudspeakers
- Electric and Magnetic Fields: Generating and Distributing Electricity
☑️ Matter 10 topics
- Matter: Density
- Matter: Kinetic Theory
- Matter: States of Matter
- Matter: Specific Heat Capacity
- Matter: Specific Latent Heat
- Matter: Particle Motion in Gases
- Matter: Pressure, Temperature and Volume
- Matter: Forces and Elasticity
- Matter: Fluid Pressure
- Matter: Upthrust and Atmospheric Pressure
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GCSE Physics (Triple) Edexcel Revision Content
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GCSE Physics (Triple) Edexcel - Motion, Forces and Conservation of Energy - Motion and Forces: Distance, Displacement, Speed and Velocity Content Preview
Motion, Forces and Conservation of Energy
Motion and Forces: Distance, Displacement, Speed and Velocity
Distance and Displacement
- Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion.
- Displacement, in contrast, is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
- Whilst distance refers to the total route travelled, displacement represents the straight line distance in a specific direction from the starting point to the endpoint of a journey.
Calculating Distance and Displacement
- Distance is calculated by the actual path taken, whereas displacement involves the shortest distance in a specific direction.
- To calculate displacement you subtract the initial position from the final position.
Speed
- Speed is a scalar quantity that refers to "how fast an object is moving" or the rate at which an object covers distance.
- It is usually measured in metres per second (m/s) or kilometres per hour (km/h).
- Average speed can be calculated using the formula: speed = distance travelled / time taken.
Velocity
- Velocity is the speed of something in a given direction. It's a vector quantity, meaning it has both magnitude (speed) and direction.
- Just as with speed, velocity is usually measured in metres per second (m/s) or kilometres per hour (km/h).
- You can calculate average velocity with the following formula: velocity = displacement / time taken.
Differences between Speed and Velocity
- Although speed and velocity are often used interchangeably in everyday language, they mean different things scientifically.
- Speed refers to how fast something is going, but velocity also tells you the direction of the movement.
- An object's speed can remain constant while its velocity changes (for example if it changes direction), and vice versa.
Graphical Representation of Motion
- Graphs can be used to represent both speed and velocity; A distance-time graph shows how far an object has travelled at any given moment, whilst a velocity-time graph shows both speed and direction.
- On a distance-time graph, a horizontal line represents an object not moving. A diagonal line represents a constant speed, and a curved line indicates changing speed.
- In a velocity-time graph, the gradient of the slope is equal to the acceleration, whilst the area under the graph represents the displacement. The steeper the gradient, the greater the acceleration. A falling gradient signifies deceleration.
Question: A cyclist travels 6 km north, then 8 km east. Calculate the total distance covered and his displacement after the journey.
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