Rest and Motion


 
 
Concept Explanation
 

Rest and Motion

Motion:

When we say an object is moving. It is always with respect to another object. For example, when we say a vehicle is moving on a road, it is moving with respect to the trees and poles on the road, which are ‘not moving’.

For example: When the car is at position A, the distance between the car and the building is very small. As the car moves away from the building (position B), its distance from the building increase. Another way of saying this is that when the car moves, its position with respect to the building changes with time.

An object is said to be in motion if its position (with respect to another object) change with time.

Rest :

A body is said to be at rest, if its position remains constant with respect to the stationary objects in its surroundings. Many of these things, like windows,doors and blackboards, do not move. They are called stationary objects or we can say that these objects are at rest.  

Sample Questions
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Question : 1

Rest state and motion state of body are _________________ terms.

Right Option : B
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Question : 2

A person is sitting in a staionary car. Which statement specifies his state clearly?

Right Option : A
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Question : 3

A book is lying on a table. What is the state of book?

Right Option : C
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