Isaac newton discovered laws of motion+gravity First law of motion is inertia o An object stays in its state of motion until a force impacts the state of motion Second law of motion- a force must be applied to an object for the object to move or stop Third law -for every action there is an equal and opposite reaction Motion is when an object is not at rest A lever is a long stick that pivots on a fulcrum Gravity is a magnetic force that keeps us down, it controls the direction something falls in, and it controls day and night Force is the pressure applied to a object Friction slows things down An unbalanced force is needed to move an object The mass is the weight of a object