Question

High speed bullet trains has a streamlined body in order to ___________ .

• A. increase friction
• B. decrease friction
• C. make them attractive
• D. None of the above

Answer 1

The correct option is B decrease friction

The streamlined shape of high speed bullet trains helps to decrease air drag or fluid friction acting on the bullet train. Whenever an object moves through air, it experience an air resistance which is nothing but a drag that slows down the speed of the object. But a streamlined body experiences less drag. Hence most of the fast moving objects are designed with a streamlined shape.