The function of vector in Physics

The function of vector in Physics

Using vectors to study physical problems
(1) Force, velocity, acceleration and displacement are vectors;
(2) The combination and decomposition of force, velocity, acceleration and displacement is the addition and subtraction of vector, and the superposition of motion also uses the combination of vector;
(3) The momentum m is the number multiplication vector;
(4) Work is defined as the inner product of force and displacement