Displaying 61 - 64 of 64 Resources

Viewing g as the value of Earth's gravitational field near the surface

Viewing g as the value of Earth's gravitational field near the surface rather than the acceleration due to gravity near Earth's surface for an object in freefall.

Subject and Topic
Form 2
Physics
Motion in a straight line
Motion under gravity
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Gravity
Law of Universal Gravitation

Voltage in an electric circuit

When a circuit is connected and complete, charge can move through the circuit. Charge will not move unless there is a reason, a force to drive it around the circuit. Think of it as though charge is at rest and some- thing has to push it along. This means that work needs to be done to make charge move. A force acts on the charges, doing work, to make them move. The force is provided by the battery in the circuit.

Subject and Topic
Form 2
Physics
Current electricity
Concept of current electricity
Resource Type
Studieboeken
Language
English
Publisher
Department of Higher Education
Publication Date
No date
Creator/Author
Leigh Kleynhans
Contributor
Michael Atkinson
Keyword
Resistance
Voltage
Series Circuit
Emf

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

Would a brick or feather fall faster?

What would fall faster on the moon, a brick or a feather?

Subject and Topic
Form 2
Physics
Motion in a straight line
Motion under gravity
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Gravity
One dimensional motion