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Ashford
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1D motion refers to motion that occurs only in one dimension, such as along a straight line. This means that an object is only moving forward or backward, with no sideways or vertical movement.
1D motion is different from 2D or 3D motion because it only involves movement along one dimension, whereas 2D and 3D motion involve movement in two or three dimensions, respectively. This means that 1D motion is simpler and easier to analyze and calculate compared to 2D or 3D motion.
Displacement in 1D motion refers to the change in an object's position along a straight line. It is a vector quantity that is measured from the initial position to the final position of the object.
Velocity in 1D motion refers to the rate of change of an object's displacement over time. It is a vector quantity that includes both the speed and direction of an object's motion.
Acceleration in 1D motion is calculated by dividing the change in an object's velocity by the change in time. It is a vector quantity that represents the rate at which an object's velocity is changing. In 1D motion, acceleration can either be positive (when an object is speeding up) or negative (when an object is slowing down).