Question

explain why objects moving in fluids must have special shapes​

Answer 1

Answer:

the objects moving in fluids must have a special shape to overcome the fluid friction acting on the efforts are therefore made to minimise the pics and so object are given special shape having pointed fronts with little brother middle portion which get tapered at the back called streamlined

Answer 2

Answer:

friction, therefore, can move easily through fluids. ... Keeping all these things into consideration the shape of the ship is made in such a way that it experiences less fluid friction i.e. drag.