Displaying 11 - 20 of 20 Resources

Introduction to energy

Energy is defined as the ability to do work. Energy can be found in many things and can take different forms. For example, kinetic energy is the energy of motion, and potential energy is energy due to an object's position or structure. Energy is never lost, but it can be converted from one form to another.

Subject and Topic
Form 1
Physics
Work, energy and power
Energy
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2015
Creator/Author
Khan Academy
Keyword
Energy

Introduction to Light

Light and the electromagnetic radiation spectrum. Wave and particle-like behaviour, and how to calculate the wavelength or frequency of a light wave.

Subject and Topic
Form 1
Physics
Work, energy and power
Energy
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Wavelength
Light
Frequency

Law of conservation of energy

A discussion on how energy can't be created or destroyed in an isolated system, and works an example of how energy is transformed when a ball falls toward the Earth.

Subject and Topic
Form 1
Physics
Work, energy and power
Energy
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2018
Creator/Author
Sal Khan
Keyword
Energy
Law of conservation of energy

LOL Diagrams

An explanation of how LOL diagrams allow us to visually represent what we mean by conservation of energy as well as what we mean by an energy system.

Subject and Topic
Form 1
Physics
Work, energy and power
Energy
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2016
Creator/Author
David SantoPietro

Optimal angle for a projectile part 1: Components of initial velocity

You want a projectile to fly as far as possible, at which angle should you launch it? We'll start with formulas for the initial velocity.

Subject and Topic
Form 2
Physics
Motion in a straight line
Speed and velocity
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Initial Velocity
Projectile motion
Speed

Potential energy and position

The potential energy between two objects due to long-distance forces can be thought of as being stored in a field. When the objects move due to the field forces, the energy stored in the field decreases

Subject and Topic
Form 1
Physics
Work, energy and power
Energy
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2021
Keyword
Energy
Energy Field

Projectile at an angle

Figuring out the horizontal displacement for a projectile launched at an angle.

Subject and Topic
Form 2
Physics
Motion in a straight line
Speed and velocity
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Projectile motion
Velocity
Speed
Motion
two dimensional motion

What is energy?

Energy is a quantitative property of a system that depends on the motion and interactions of matter and radiation within that system. That there is a single quantity called energy is due to the fact that a system’s total energy is conserved, even as, within the system, energy is continually transferred from one object to another and between its various possible forms.

Subject and Topic
Form 1
Physics
Work, energy and power
Energy
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2021
Creator/Author
Khan Academy
Keyword
Energy

Why distance is area under velocity-time line

Understanding why distance is area under velocity-time line.

Subject and Topic
Form 2
Physics
Motion in a straight line
Speed and velocity
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2012
Creator/Author
Sal Khan
Keyword
Distance
Velocity

Work, energy and power

In this lesson you will learn about:

  • the concept of work
  • understand that work is done by an applied force
  • the concept of energy
  • identify the different types of energy
  • the concept of power
Subject and Topic
Form 1
Physics
Work, energy and power
Energy
Resource Type
Cursus
Language
English
Publication Date
2023