Question

define 1 fluid 2 buoyant force

Answer 1

fluid is a substance with no fixed shape and yields easily to external pressure; a gas or especially a liquid. or in a simple way a fluid is a fluid is a substance that continusoly deforms and under a applied shear stress.
buyont force or upthrust is an upward force exerted by a fluid that opposes the weight of an immersed object.
Hope It Helps
GUD LCK

Answer 2

definition for buoyant force:- in science,buoyancy(also known as upthrust) is an upward force exerted by fluid that opposes the weight of an object. in a column of fluid pressure increases with depth as a result of the weight of overlying fluid. since it is a force we can call it buoyant force.... it is a force does move a body in upward direction...

definition for fluid is:-
a substance that has no fixed shape and yields easily to external pressure; a gas especially a liquid...
its ur answer ...hope it helps u...