Question

why are the bodies of boats,ships,aeroplanes etc made streamlined?

Answer 1

the bodies are made streamlined to reduce the friction and let the bodies move in an easy way. this helps in streamline flow of water and air

Answer 2

The bodies of boats, ships etc. are made streamlined to allow streamline flow of air ( ie. each particle of air passes through the same point with the same speed and in the same direction) which helps in reducing the effect of drag ( ie. the force of friction exerted by fluids) and helps in gaining more speed. In simple words, it helps in reducing friction and helps the vehicles to move with faster speeds.
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