Definition of the quantities
The used mechanical quantities are the following :
The position will be noted . Its unit is meters .
The instant speed is the time derivative of the position : . Its unit is meters per second .
The acceleration indicates the change of speed over time.
The instant acceleration is given by : . Its unit is meters per squared seconds .
A force is an interaction capable of changing the motion of an object. It is generally represented by the letter and its unit is the Newton .