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Two objects must interact for force to come into play
Example 1
A person standing behind a car does not make car move
But when a person pushes the car,he makes car move
We can say that when there is an interaction between the person and car,only then car moves
Person Standing behind car
No interaction so no force
Person Pushing car
Interaction between Person and car, So Car moves
Example 2
If a football player just stands near the football,the football does not move
When he kicks the football,it moves
We can say that there is interaction between football player and ball,only then ball moves
Player just stands near the football
Player Kicks the football
Sometimes both objects apply force on one another
Kids pushing each other
Two girls pulling a toy.
Questions
NCERT Question 1 - Give two examples each of situations in which you push or pull to change the state of motion of objects.
