Inertia Falsifies Newtonian Dynamics

There are some obstacles in Newtonian dynamics that are still unresolved. Those obstacles are caused by both of the wrong understanding of inertia and the limitations in Newton’s first & second laws. Therefore, I theoretically analyzed the motion of the sp herical inelastic object on a perfectly smooth horizontal surface in a vacuumed system. I hypothesized two new laws in dynamics and a new physical property of forces which is “Force Relative Speed (FRS)” to explain the unexpected motion of the object and t he flaws in Newton’s dynamics. Also, I presented a new definition of inertia and showed why and when this new definition should be used. According to the dynamics that I introduced in this article, Newtonian physics cannot describe any object's motion when that object has inertia, therefore the motion of many objects in nature is misunderstood. Consequently, a lot of physical parameters that were measured by using Newtonian dynamics are not accurate.