The unit of force in S.I. system is

(i) Kg $m{s}^{-2}ms^\{-2\}$

(ii) Newton

(iii) Pascal

(iv) Kg $m{s}^{-1}ms^\{-1\}$

The unit of pressure in S.I. system is

Pressure = ………

The force of attraction between any two objects having mass is

For the body at rest, the net force is ………

For the body at motion, the net force is

If the area is less, then the value of pressure

The force acting in normal direction is

The force exerted by using our body muscles is

The resistance to the movement of a body over the surface of another is

The direction of friction and the direction of motion are always

Direction and magnitude are fixed for

The force acts between a charged balloon and piece of papers

The gravitational force acts between

We can differentiate ‘contact force’ and ‘field force’ by