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# Motion The objects that do not change their position compared with the other objects they are in the state of relative tranquility. All the object's motions are relative and the tranquility also. In the nature there isn't any relative tranquility neither a relative motion. ## Types of Motion acc...

# Motion The objects that do not change their position compared with the other objects they are in the state of relative tranquility. All the object's motions are relative and the tranquility also. In the nature there isn't any relative tranquility neither a relative motion. ## Types of Motion according to their Velocity * **Uniform motion:** is defined as the motion of an object in which its velocity remains constant. * **Non-uniform motion:** is defined as the motion of an object in which its velocity changes by the time. ## Types of Motion according to their Trajectory The imagined line that connect all the positions of object's motion is known as a trajectory. According to their trajectory types of motion are: straight-line motion and curved motion.