Why is there a need to streamline boats, ships, and planes?
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Explanation:
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.
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Answer:
In case of streamlined boat and ships, the v-like shape helps it to cut the water currents and move fast.
In case of an aeroplane, the v-like shape helps it to cut the force and currents exerted by the air on the plane and helps it move fast.
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