Answer:
distance and time
Explanation: the farther you go and how much time it will take you
car suspension
guitar string
clips for hanging clothes
keyboards buttons
elevators
Bike
because it involves lots of angular mechanics that allow it to balance itself when moving.
all other examples have a constant force being applied into the system which is very easy to formulate, therefore they are simple machines.
A complex machine is a machine made up of two or more simple machines that make your work easier to do. There are six simple machines from which all complex machines are made. They include: The lever. The inclined plane