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How to Find Speed from a Graph, Gravity on Earth, and Liquid Density!

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Neive Inglis

21/02/2023

Physics

Motion, Particle matter, Forces, Energy, Springs, Waves and Core practicals

How to Find Speed from a Graph, Gravity on Earth, and Liquid Density!

This physics guide covers key concepts in motion, forces, and energy for young students. It includes explanations of speed calculations, gravitational acceleration on Earth, density measurements, and practical experiments. The guide uses diagrams and equations to illustrate important physics principles.

• Motion topics include distance-time graphs, velocity-time graphs, and acceleration calculations
• Force concepts cover Newton's laws, resultant forces, and momentum
• Energy sections explain different energy stores, conservation of energy, and specific heat capacity
• Practical experiments are outlined for measuring acceleration, density, and specific heat capacity

...

21/02/2023

221

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

Calculating Speed and Distance from Graphs

This section delves deeper into calculating speed from graph physics and determining distance using velocity-time graphs. It provides step-by-step instructions for these calculations.

To calculate speed from a distance-time graph:

  1. Identify the change in distance
  2. Identify the change in time
  3. Divide the change in distance by the change in time

Definition: Speed is the rate of change of distance with respect to time.

For calculating distance from a velocity-time graph:

  1. Find the area under the graph
  2. If the graph shows a triangle and rectangle, calculate the area of each separately
  3. Add the areas together to get the total distance traveled

Example: Area of triangle = base×heightbase × height / 2, Area of rectangle = base × height

The page also outlines an acceleration core practical experiment:

  1. Use a meter ruler to measure intervals and find distance
  2. Attach a pulley to the end of the table and set up two light gates
  3. Tie string to the trolley and pass it over the pulley
  4. Attach weights to the hanger
  5. Release the car and calculate speed using light gate measurements
  6. Record results and repeat with decreasing weights

This practical experiment helps students understand the relationship between force, mass, and acceleration in real-world scenarios.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

Particle Model and Density

This section introduces the particle model of matter and explores the concept of density. It covers important definitions and equations related to thermal properties of materials.

Definition: Density is a measure of the amount of matter contained per unit volume of a substance.

Key concepts introduced:

  • Specific heat capacity SHCSHC: The thermal energy required to change the temperature of 1kg of a material by 1°C
  • Specific latent heat: The energy required to change 1kg of material from one state to another

Vocabulary: Absolute zero is the temperature at which all particles are stationary 273°Cor0Kelvin-273°C or 0 Kelvin.

The page presents the equation for density: Density kg/m3kg/m³ = Mass kgkg / Volume m3

A temperature-time graph is shown, illustrating the different states of matter and phase changes:

  • Melting and freezing points
  • Vaporization and condensation

Highlight: To convert from Celsius to Kelvin, add 273 to the Celsius temperature.

This section provides a comprehensive overview of the particle model, helping students understand the relationship between temperature, state changes, and the behavior of matter at the molecular level.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

Density Core Practical and Gas Pressure

This section outlines the density core practical liquid experiment and introduces the concept of gas pressure. It provides step-by-step instructions for measuring the density of solids and liquids.

Density of a solid:

  1. Measure mass using a balance
  2. Determine volume through displacement method
  3. Calculate density using the equation: Density = Mass / Volume

Density of a liquid:

  1. Measure mass by weighing a beaker with and without the liquid
  2. Measure volume using a measuring cylinder
  3. Apply the density equation

Example: For water displacement, the volume of water displaced by an object equals the object's volume.

The section also covers gas pressure:

  • Gas pressure is caused by gas particles colliding with container walls
  • Pressure increases with temperature increase
  • Pressure increases as volume decreases

Specific heat capacity core practical:

  1. Measure the mass of water
  2. Record energy transferred from a Joulemeter
  3. Measure initial and final temperatures
  4. Calculate specific heat capacity using the equation: SHC = Energytransferred×ChangeintemperatureEnergy transferred × Change in temperature / Mass

This practical work helps students understand the relationship between density, mass, and volume, as well as the factors affecting gas pressure.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

Forces and Newton's Laws

This section introduces the concept of forces and explains Newton's three laws of motion. It covers balanced and unbalanced forces, resultant forces, and reaction times.

Newton's First Law:

  • When the resultant force is zero, an object remains stationary or moves at constant velocity
  • Forces are balanced in this state

Definition: Resultant force is the overall force acting on an object when all individual forces are combined.

Newton's Second Law:

  • Force = Mass × Acceleration

Newton's Third Law:

  • For every action, there is an equal and opposite reaction when two objects interact

Example: When a person pushes against a wall, the wall pushes back with an equal force.

The page also covers:

  • Calculation of resultant forces
  • Reaction times humanreactiontime:0.10.3secondshuman reaction time: 0.1-0.3 seconds
  • Contact forces vs. non-contact forces

Highlight: The ruler drop test is used to calculate reaction time in practical experiments.

This section provides a comprehensive overview of forces and their effects on objects, helping students understand the fundamental principles of motion in physics.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

Force Equations and Stopping Distances

This section presents key equations related to forces and introduces the concept of stopping distances in the context of vehicle motion.

Important equations:

  1. Force NN = Mass kgkg × Acceleration m/s2m/s²
  2. Weight NN = Mass kgkg × Gravitational field strength N/kgN/kg
  3. Momentum kgm/skg·m/s = Mass kgkg × Velocity m/sm/s

Definition: Stopping distance is the total distance a vehicle travels from the moment the driver perceives a need to stop until the vehicle comes to a complete halt.

Stopping distance components:

  1. Thinking distance: Distance traveled during the driver's reaction time
  2. Braking distance: Distance traveled while the brakes are applied

Factors affecting stopping distance:

  • Thinking distance is influenced by reaction time and vehicle speed
  • Braking distance is affected by road conditions, brake/tire condition, vehicle speed, and mass

The section also outlines an acceleration core practical:

  1. Measure velocity at each light gate
  2. Calculate time between gates
  3. Vary mass or force in each trial

Highlight: As mass decreases or force increases, acceleration increases, demonstrating the relationship F = m × a.

This practical experiment helps students understand the factors influencing acceleration and how they relate to Newton's Second Law of Motion.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

Conservation of Energy and Energy Stores

This page introduces the concept of energy conservation and different types of energy stores, providing a foundation for understanding energy transformations in physical systems.

The page begins by listing various types of energy stores:

  1. Chemical energy: Released in chemical reactions
  2. Kinetic energy: Present in moving objects
  3. Gravitational Potential Energy GPEGPE: Associated with objects that have been raised to a height
  4. Elastic energy: Stored in stretched or compressed objects
  5. Thermal energy: Present in hot objects

Highlight: Understanding these different energy stores is crucial for analyzing energy transfers and transformations in various physical processes.

The concept of conservation of energy is implicitly introduced through this list, as it sets the stage for discussing how energy can be transferred between these different stores while the total amount of energy remains constant.

Definition: The conservation of energy principle states that energy cannot be created or destroyed, only converted from one form to another.

While not explicitly stated on this page, the conservation of energy is a fundamental principle in physics that underlies many phenomena and is essential for solving energy-related problems.

The page appears to be the beginning of a larger discussion on energy, potentially leading into topics such as:

  • Energy transfers and transformations
  • Efficiency and energy losses
  • Calculations involving different forms of energy
  • Practical applications of energy conservation in real-world systems

By introducing these basic energy stores, the page prepares students to think about energy in a more systematic way, setting the foundation for more complex energy analyses in future lessons.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

[No content provided for this page]

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

[No content provided for this page]

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

View

[No content provided for this page]

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Physics

221

21 Feb 2023

12 pages

How to Find Speed from a Graph, Gravity on Earth, and Liquid Density!

user profile picture

Neive Inglis

@neiveinglis_

This physics guide covers key concepts in motion, forces, and energy for young students. It includes explanations of speed calculations, gravitational acceleration on Earth, density measurements, and practical experiments. The guide uses diagrams and equations to illustrate important physics... Show more

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

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Calculating Speed and Distance from Graphs

This section delves deeper into calculating speed from graph physics and determining distance using velocity-time graphs. It provides step-by-step instructions for these calculations.

To calculate speed from a distance-time graph:

  1. Identify the change in distance
  2. Identify the change in time
  3. Divide the change in distance by the change in time

Definition: Speed is the rate of change of distance with respect to time.

For calculating distance from a velocity-time graph:

  1. Find the area under the graph
  2. If the graph shows a triangle and rectangle, calculate the area of each separately
  3. Add the areas together to get the total distance traveled

Example: Area of triangle = base×heightbase × height / 2, Area of rectangle = base × height

The page also outlines an acceleration core practical experiment:

  1. Use a meter ruler to measure intervals and find distance
  2. Attach a pulley to the end of the table and set up two light gates
  3. Tie string to the trolley and pass it over the pulley
  4. Attach weights to the hanger
  5. Release the car and calculate speed using light gate measurements
  6. Record results and repeat with decreasing weights

This practical experiment helps students understand the relationship between force, mass, and acceleration in real-world scenarios.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Particle Model and Density

This section introduces the particle model of matter and explores the concept of density. It covers important definitions and equations related to thermal properties of materials.

Definition: Density is a measure of the amount of matter contained per unit volume of a substance.

Key concepts introduced:

  • Specific heat capacity SHCSHC: The thermal energy required to change the temperature of 1kg of a material by 1°C
  • Specific latent heat: The energy required to change 1kg of material from one state to another

Vocabulary: Absolute zero is the temperature at which all particles are stationary 273°Cor0Kelvin-273°C or 0 Kelvin.

The page presents the equation for density: Density kg/m3kg/m³ = Mass kgkg / Volume m3

A temperature-time graph is shown, illustrating the different states of matter and phase changes:

  • Melting and freezing points
  • Vaporization and condensation

Highlight: To convert from Celsius to Kelvin, add 273 to the Celsius temperature.

This section provides a comprehensive overview of the particle model, helping students understand the relationship between temperature, state changes, and the behavior of matter at the molecular level.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Density Core Practical and Gas Pressure

This section outlines the density core practical liquid experiment and introduces the concept of gas pressure. It provides step-by-step instructions for measuring the density of solids and liquids.

Density of a solid:

  1. Measure mass using a balance
  2. Determine volume through displacement method
  3. Calculate density using the equation: Density = Mass / Volume

Density of a liquid:

  1. Measure mass by weighing a beaker with and without the liquid
  2. Measure volume using a measuring cylinder
  3. Apply the density equation

Example: For water displacement, the volume of water displaced by an object equals the object's volume.

The section also covers gas pressure:

  • Gas pressure is caused by gas particles colliding with container walls
  • Pressure increases with temperature increase
  • Pressure increases as volume decreases

Specific heat capacity core practical:

  1. Measure the mass of water
  2. Record energy transferred from a Joulemeter
  3. Measure initial and final temperatures
  4. Calculate specific heat capacity using the equation: SHC = Energytransferred×ChangeintemperatureEnergy transferred × Change in temperature / Mass

This practical work helps students understand the relationship between density, mass, and volume, as well as the factors affecting gas pressure.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Forces and Newton's Laws

This section introduces the concept of forces and explains Newton's three laws of motion. It covers balanced and unbalanced forces, resultant forces, and reaction times.

Newton's First Law:

  • When the resultant force is zero, an object remains stationary or moves at constant velocity
  • Forces are balanced in this state

Definition: Resultant force is the overall force acting on an object when all individual forces are combined.

Newton's Second Law:

  • Force = Mass × Acceleration

Newton's Third Law:

  • For every action, there is an equal and opposite reaction when two objects interact

Example: When a person pushes against a wall, the wall pushes back with an equal force.

The page also covers:

  • Calculation of resultant forces
  • Reaction times humanreactiontime:0.10.3secondshuman reaction time: 0.1-0.3 seconds
  • Contact forces vs. non-contact forces

Highlight: The ruler drop test is used to calculate reaction time in practical experiments.

This section provides a comprehensive overview of forces and their effects on objects, helping students understand the fundamental principles of motion in physics.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Force Equations and Stopping Distances

This section presents key equations related to forces and introduces the concept of stopping distances in the context of vehicle motion.

Important equations:

  1. Force NN = Mass kgkg × Acceleration m/s2m/s²
  2. Weight NN = Mass kgkg × Gravitational field strength N/kgN/kg
  3. Momentum kgm/skg·m/s = Mass kgkg × Velocity m/sm/s

Definition: Stopping distance is the total distance a vehicle travels from the moment the driver perceives a need to stop until the vehicle comes to a complete halt.

Stopping distance components:

  1. Thinking distance: Distance traveled during the driver's reaction time
  2. Braking distance: Distance traveled while the brakes are applied

Factors affecting stopping distance:

  • Thinking distance is influenced by reaction time and vehicle speed
  • Braking distance is affected by road conditions, brake/tire condition, vehicle speed, and mass

The section also outlines an acceleration core practical:

  1. Measure velocity at each light gate
  2. Calculate time between gates
  3. Vary mass or force in each trial

Highlight: As mass decreases or force increases, acceleration increases, demonstrating the relationship F = m × a.

This practical experiment helps students understand the factors influencing acceleration and how they relate to Newton's Second Law of Motion.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Conservation of Energy and Energy Stores

This page introduces the concept of energy conservation and different types of energy stores, providing a foundation for understanding energy transformations in physical systems.

The page begins by listing various types of energy stores:

  1. Chemical energy: Released in chemical reactions
  2. Kinetic energy: Present in moving objects
  3. Gravitational Potential Energy GPEGPE: Associated with objects that have been raised to a height
  4. Elastic energy: Stored in stretched or compressed objects
  5. Thermal energy: Present in hot objects

Highlight: Understanding these different energy stores is crucial for analyzing energy transfers and transformations in various physical processes.

The concept of conservation of energy is implicitly introduced through this list, as it sets the stage for discussing how energy can be transferred between these different stores while the total amount of energy remains constant.

Definition: The conservation of energy principle states that energy cannot be created or destroyed, only converted from one form to another.

While not explicitly stated on this page, the conservation of energy is a fundamental principle in physics that underlies many phenomena and is essential for solving energy-related problems.

The page appears to be the beginning of a larger discussion on energy, potentially leading into topics such as:

  • Energy transfers and transformations
  • Efficiency and energy losses
  • Calculations involving different forms of energy
  • Practical applications of energy conservation in real-world systems

By introducing these basic energy stores, the page prepares students to think about energy in a more systematic way, setting the foundation for more complex energy analyses in future lessons.

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

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[No content provided for this page]

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

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[No content provided for this page]

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

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[No content provided for this page]

distance
velbaty
CPI Motion (paper 5)
Standard values
walking - Imis
Running 3-5m/s
speed of sound in air - 330m/s
Gravitational acceleratio

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iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

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Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

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iOS user

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Thomas R

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Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user