Object at rest will remain at rest and an object in motion will remain in motion unless acted upon by an outside force.
Inertia = tendency of an object to resist a change in motion
Net Force = sum of all forces acting on an object
Movement occurs when there is a net force acting on an object
Object remains at rest or remains at a constant velocity if net force = zero
Acceleration depends on both force and mass
Force = mass * acceleration (F=ma)
Unbalanced forces cause acceleration of an object
As mass increases, acceleration decreases
As force increases, acceleration increases
For every action, there is an equal and opposite reaction
Force may be equal but mass of objects determine the effect of force.
Action reaction forces are equal in strength but opposite in direction
Momentum - The result of mass of an object times the object's velocity
Action reaction forces can cause a change in motion, act on different objects, and cause an equal by opposite reaction