MCQ
Consider the following statements and choose the incorrect one:
  • Motion of an object or a part of it around a fixed point is known as axis motion.
  • B
    A body repeating its motion after certain interval of time is in periodic motion.
  • C
    In rectilinear motion object moves along a straight line
  • D
    The $SI$ unit of length is meter.

Answer

Correct option: A.
Motion of an object or a part of it around a fixed point is known as axis motion.

When a ball is moving on the ground, it is rotating as well as moving forward on the ground. So, a ball rolling on the ground has two types of motion, rotational motion as well as a rectilinear motion.

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