Question

A motion of an object along a straight line is —

Answer 1

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A motion of an object along a straight line is called linear motion.

Linear motion is also known as rectilinear motion.

Answer 2

A motion of an object along a straight line is a rectilinear motion.

• Rectilinear motion commonly called linear motion is a motion in which the velocity of the body moving is kept constant and the path on which the body travels in a straight line.

• These types of motion consist of only one coordinate.  
• It is a one-dimensional motion.

• Examples of rectilinear motions are "bus traveling on a straight road", "freely-falling body", etc.,