1- an example on a body that it is in motion to an observer and at rest to another. 2- examples of motions having the shapes of trajectory : rectilinear, circular and parabolic.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

do you have a formula possibly

the answer is a. hope this .

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation