Question

What is/are the example(s) of rectilinear motion?

• A.
  Motion of an ant.
• B.
  A ball rolling into a straight pipe.
• C.
  Motion of Clock pendulum.
• D.
  A train moving on a straight track.

Answer 1

Answer: (B), (D)

The correct options are
B
A ball rolling into a straight pipe.
D

A train moving on a straight track.
If a body in translatory motion moves along a straight line, then the motion is called a rectilinear motion. Ball and train are moving in a straight line. The ant moves in a random path and so it is not in rectilinear motion. Clock pendulum repeats its motion around a fixed point, so it is an example of oscillatory motion.