Which movement occurs when a body and all parts travel the same distance in the same direction and speed?

The movement where a body and all of its parts travel the same distance in the same direction and speed is known as linear motion. In linear motion, all points of the object move together along a straight line, maintaining a constant speed and direction. This type of motion is characterized by simplicity and uniformity, making it foundational in understanding the basic principles of kinematics.

For instance, when a car moves along a straight road at a constant speed, every point on the car travels the same distance over a given time period, exemplifying linear motion. This contrasts with other types of motion. In circular motion, for instance, while the object may travel along a circular path, the parts of the object do not all cover the same distance or direction at the same time. Similarly, in rotational motion, different parts of a body rotate around an axis and thus travel different distances depending on their position relative to that axis. Lastly, periodic motion refers to motions that repeat at regular intervals but do not specify that all parts travel the same distance at the same time.