Question

Give reason sport cars, aeroplanes and boats are designed to have a streamlined
​

Answer 1

Sports cars, Aeroplanes and boats travel at a very fast speed. Hence, they need such a body which can easily move in air or water. So as to get maximum speed without drag. Thus, streamlined body is provided to them so that to reduce drag.

Answer 2

Answer:

Because streamlined shape has special shape which is narrow from front and broad from backward. They reduce pressure on land, water and air.