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Force and pressure class 8

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1:- What Is Force

Ans:- A force is any interaction that when unopposed , it will change the motion , shapes and direction of an object. A force has both magnitude and direction so it is a vector quantity. the SI unit of force is Newton. And the force is represented by 'F' 

  2:- what is the formula of Force?

Ans:- Since mass is the direct proportional of force and acceleration is also direct proportional of force. therefor

F ∝ m

F ∝ a

Therefor , F = ma

The SI unit of mass (m) = kg

The SI unit of acceleration (a) = ‎m/s2

so the base unit of Force =  kg . m/s2






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