Question

State whether true or false
A coin moving over a carrom board exhibits rectilinear motion.
(A) True
(B) False

Answer 1

Hint: To state whether a coin moving over a carrom board exhibits rectilinear motion or not we should know the fundamental type of motions. Each type of motion appears similar to each other but there are differences.

Complete step by step answer
The objects which are in the state of rest or remain fixed in a place without any movement are in the stationary state
When an object shows some movement it is said to be in motion. Motion can be either uniform or non-uniform
Uniform Motion: If an object covers equal distances in equal intervals of time, then it is in uniform motion.
Non-Uniform Motion: If an object covers unequal distances in equal intervals of time, then it is in non-uniform motion.
There are many different type of motions,
The fundamental motions are
Linear or rectilinear motion: When an object moves along a straight line, the motion of the object is called rectilinear motion.
For example; motion of a car on road, bullet from the gun, march past of soldiers.
Circular motion: when an object moves along a circular path, the motion of the object is called Circular motion.
For example; rotation of earth around sun, motion of an athlete on track (ground).
Periodic motion: when an object repeats the movement after a regular interval of time then it is known as Periodic motion.
Example; simple pendulum, motion of fan, motion of watch
Rotational motion: when an object rotates in an affixed axis it is known as rotational motion.
Example; motion of fan, motion of watch, merry-go-round, wheels of two wheelers.
From above discussion,
We can say that a coin moving over a carrom board exhibits rectilinear motion, because if we hit a coin in the carrom board using the striker it moves in a straight line.

Hence the correct answer is option (A) True.

Note: A periodic and rotational motion can be a circular motion. A circular motion can be a periodic and rotational motion. A rotational motion can be a periodic motion and periodic motion can be a rotational motion.