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?



What is Inertia of Rest? Explain with an example.

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

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