EXCI 351 Chapter Notes - Chapter 4: Net Force, Ground Reaction Force, Normal Force
25 Sep 2016
School
Department
Course
Professor
Document Summary
Force: something that possesses the capability to cause a change in motion of a system. Newton"s first law, law of inertia: every body preserves in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed thereon. A system at rest will remain at rest, and a system in motion will remain in motion in a straight line until acted upon by an external force. Inertia = the resistance of a system to having its state of motion changed by application of force. Mass = measure of a system"s inertia. The more massive an object is, the greater its tendency to remain in its current state of motion. Change in motion is directly proportional to the magnitude of the applied force. If the state of motion of the system changes, a force must have been applied. The observed change in motion is called acceleration.
