Question

Explain why objects moving in air or water has different shapes?

Answer 1

Answer:

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Moving objects in fluid must have special shapes because the drag force or the friction force depends of the shape of the object. Special shapes are designed to minimize the opposing frictional force.

Answer 2

In the case of the ship when it is moving through the water, the sea will exert some drag. This drag opposes the motion of the ship. In order to overcome this drag, the ship has to apply a lot of force. This will result in a waste of energy. Keeping all these things into consideration the shape of the ship is made in such a way that it experiences