Question

Define force is it necessary for the two bodies to be in direct contact for a exist between them

Answer 1

force is a push or pull acting on an object which tends to change it's state of motion, direction of motion and it's structure. no, it's not necessary for the two bodies to be in direct contact with each other for the exertion of force... there r non-contact forces too like magnetic force , electrostatic force e.t.c..

Answer 2

Hey!

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Force is a push or pull which can change shape, size, direction of an object.

Force is also defined as product of mass and acceleration.
There are two types of forces-: Contact and non-contact forces.

It's SI unit is newton (N).

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Hope it helps...!!!