Law of Inertia
Law of Inertia: Overview
This topic consists of various concepts like Concept of Inertia,Inertia of Motion,Inertia of Rest, etc.
Important Questions on Law of Inertia
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : An electric fan continues to rotate for some time after the current is switched off.
Reason R: Fan continues to rotate due to inertia of motion.
In the light of above statements, choose the most appropriate answer from the options given below.

A stone when thrown on a glass window smashes the window pan to pieces. But a bullet fired from a gun passes through making a hole. Why ?

Why does an electric fan continue to rotate for some time after the current is switched off ?


"A person on a horse's back tends to fall back if the horse starts running all of a sudden". Why ?

"When the branch of a tree is shaken, the fruits fall". Why ?

"A ball thrown vertically upwards by a person sitting in a train comes back to his hands". Why ?

"An athlete runs a certain distance before taking a leap". Why ?

A bob is suspended by a cord from the ceiling of a car. What is the effect on the position of the bob if the car moves with a constant acceleration?

"A man jumping out of a moving train falls with his head forward". Why?

If we jerk a piece of paper from under a book quick enough, the book will not move. Why ?

Rahul was sitting on the back of a horse. The horse suddenly started running, Rahul



Why does a rider on horseback fall when the horse starts running all of a sudden?



A passenger getting down from a moving bus, falls in the direction of the motion of the bus, this is an example for

What is Inertia of Rest? Explain with an example.

Which of the following physicists used the term inertia for the first time?
