1. The right-hand side of this equation is treated as an inertial force . 2. Reynolds number is the ratio of inertial forces to viscous forces. 3. The lateral displacements can be caused by wind or seismically induced inertial forces . 4. As the speed increases, the inertial forces become comparable with the adhesion forces. 5. These additional forces are termed inertial forces , fictitious forces or " pseudo forces ". 6. High Reynolds numbers indicate that the inertial forces are more important than the viscous forces. 7. Of course, there is always a certain inertial force in favor of staying with old parts. 8. Would one get squashed by inertial forces ? 9. Unfortunately, this usage of " inertial force " conflicts with the Newtonian idea of an inertial force . 10. In such cases, inertial forces are sometimes neglected; this flow regime is called Stokes or creeping flow.