Depending on your year/make/model, you could have a malfunctioning IAC valve, or vacuum leak, stuck accelerator cable/linkage, or possibly drive-by-wire issues if your car is equipped with the last one... This Site Might Help You. When my car is in park it revs to 2 rpms. When I put my car into park the rpms are still revving at 1 to 2. And sometimes I hear it happening and notice the arrow going up.
Biomechanics is the study of the structures and materials of human, plant, and animal life and the effect of external stimuli upon these systems. The field is a cutting-edge science, but it has ancient roots.
The study of biomechanics ranges from the inner workings of a cell to the movement and development of limbs, to the mechanical properties of soft tissue, and bones.