Answers

2015-09-24T19:53:39+05:30
A force is a push, pull or a twist which has a tendency to change the shape, state of rest or of uniform motion of the body on which it has been applied.
 
it's SI unit is kg m /s² or Newton
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2015-09-24T19:54:40+05:30
Pull or push of an object is called force.
The S.I unit of force is Newton.
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