Question

what is streamling how is it useful​

Answer 1

Streamlining is a design that offers the least resistance to the flow of a fluid, especially air or water. Friction is minimum for a streamlined shape, which is rounded in the front and narrow at the back. It is useful as: ... Ship also have streamlined shapes to reduce friction with water.

Answer 2

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A streamlined body is the one which is pointed at the ends and broad at the middle. Such body when travel through a fluid or gaseous medium, exhibit minimum friction or resistance. E.g. A body shape which is streamlined helps cut against the friction created by the medium around the moving body.

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