Explain the meanings of:

(i) rectilinear motion

(ii) curvilinear motion

Give one example of each.

(i) The motion of a body in a straight line is called rectilinear or linear motion.
Example — A car moving on a straight road.

(ii) If the motion of a body is along a curved path, it is said to be a curvilinear motion.
Example — The motion of a cycle while taking a turn on the road.