PHYS 2205 Chapter Notes - Chapter 4: Net Force, Fundamental Interaction, Friction
Document Summary
Chapter 4 forces and newton"s laws of motion. 4. 2 newton"s first law of motion: an object continues in a state of rest or motion at a constant velocity unless compelled to change that state by a net force. If net force = 0 then velocity is constant: at times a greater net force is required to change the velocity of some objects than others. Inertia = tendency of an object to remain at rest or in motion at a constant velocity. Mass gives a quantitative measure of inertia (kg) 4. 3 newton"s second law of motion: acceleration of object is direction proportional to the net force. 4. 5 newton"s third law of motion: forces always come in pairs, whenever one object exerts a force on a second object, the second object exerts an oppositely direct force of equal magnitude on the first object, action/reaction. 4. 8 normal force: surface exerts on object.
