Question

Identify the uniform motion among the following:

• A. Movement of a housefly
• B. Rotation of Earth
• C. Movement of the hands of a wall clock
• D. A train entering into a railway station

Answer 1

Answer: (B), (C)

The correct options are
B Rotation of Earth
C Movement of the hands of a wall clock

An object is said to be in uniform motion when it covers equal distances in equal intervals of time. Earth and hands of a clock move in their constant speeds. So these two are examples of uniform motion.
The movement of a housefly and a train entering into a railway station are example of non-uniform motion as it changes its speed randomly.