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 means the to...
Power The power of a mechanical process is the rate at which energy is transferred Since work done is equal to the energy transferred, power can also be defined as the rate of doing work or the wor...
Work Done 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 object's displ...
Elastic Potential Energy Elastic potential energy is defined as The energy stored within a material (e.g. in a spring) when it is stretched or compressed It can be found from the area under the for...
Gravitational Potential Energy Gravitational potential energy (Ep) is energy stored in a mass due to its position in a gravitational field If a mass is lifted up, it will gain Ep (converted from ot...
Kinetic Energy Kinetic energy (Ek) is the energy an object has due to its motion (or velocity) The faster an object is moving, the greater its kinetic energy When an object is falling, it is gainin...
Friction Friction is a force that works in opposition to the motion of an object It occurs between two solid bodies that are in contact with one another The opposition of friction slows down the mo...
Applying Newton’s Laws of Motion Newton's laws of motion are strong tools to understand the motion of objects with forces acting upon them Below are two worked examples demonstrating different situ...
Newton’s Third Law Newton’s third law of motion states: Whenever two bodies interact, the forces they exert on each other are equal and opposite Newton’s third law explains the following important ...
