An object at rest will remain at rest and an object moving with a given velocity will continue moving with the velocity unless acted on by an external force
Newtons second law
The acceleration of an object is directly proportional to the resultant force acting on it and inversely proportional to its mass
Newtons second law equation
F = ma
Forces on an object travelling at terminal velocity
The forces are balanced in both the vertical and horizontal components of its motion
There is no resultant force and therefore no acceleration
Terminal velocity
For a given set of conditions the terminal velocity is the maximum speed of an object, the object will have zero acceleration
Newtons third law
Every action has an equal and opposite reaction. This means that there is always a pair of forces acting on interacting objects, equal in magnitude but in opposite directions
Consequence of linear conservation of momentum
The total momentum of a system before an event is always equal to the total momentum of the system after the event
