What are the laws of indices? Laws of indices (or index laws) allow you to simplify and manipulate expressions involving exponents An exponent is a power that a number (called the base) is raised t...
Standard form?(sometimes called?scientific notation?or?standard index form) gives us a way of writing very big and very small numbers using powers of 10. Standard Form Why use standard form? Some n...
Density Density is the?mass per unit volume?of an object Objects made from low-density materials typically have a lower mass For example, a balloon is less dense than a small bar of lead des...
Kinetic & Gravitational Potential Energy Kinetic Energy Kinetic energy is the energy an object has due to its?motion?(or velocity) The faster an object is moving, the greater its kinetic...
The Principle of Conservation of Energy The Principle of Conservation of Energy states that: Energy cannot be created or destroyed, it can only be transferred from one form to another This m...
Efficiency The efficiency of a system is a measure of how well energy is transferred in a system Efficiency is defined as?the ratio of the useful power output from a system to its total powe...
Area Under a Force-Displacement Graph The work done can also be found from a force-displacement graph If the force is not constant and is plotted against the displacement of the object: The ...
Work & Power Work is defined as The amount of energy transferred when an external force causes an object to move over a certain distance If the force is parallel to the direction of the ...
Elastic & Inelastic Collisions In both collisions and explosions, momentum is always conserved However,?kinetic energy?might not always be A collision (or explosion) is either: Elastic?–...
