Question

if a body starts moving with uniforn speed ina particular direction on a perfectely smooth surface no force is acting on it true ir false or explain

Answer 1

this statement is true 

because newton's 1st law of motion says that:

a body in uniform motion and a body at rest tends to be in it's state of motion or it's state of rest unless and until an unbalanced force is applied on it .

i hope it helps............. 

Answer 2

false. Cuz there is frictional force between the body and the surface