The acceleration due to a changing velocity direction. it points towards the center of the path and equals v^2/r

Energy cannot be created or destroyed only transformed from one form to another. The mechanical energy of a system stays the same in absence of frictional forces

The gravitational force experienced by a point test particle of a unit mass. g=GM/r^2

The tension in a spring is proportional and opposite to its extensionF=-kx

The total change in momentum of a system as a result of the force acting on it. (area under a force over time graph)

There is an attractive force between any two point massesF=G mm/r^2the force is directed along the line joining the two masses

1. a system remains at rest or moves with a constant velocity if the net external force is zero.2. the net force on a body equals the rate of change of the body's momentum3. for every action exerted on one object there will be an equal and opposite reaction on another

The total momentum of a system remains the same provided that the net external force is zero.

Rate of energy transfer (rate that work is being performed)

The net external force of a system is zero

Force/distancenet work done is equal to change in kinetic energy