Question

most aircrafts and ships have their front shape pointed give reasons

Answer 1

we know if we run sum force work against our motion .I.e. air which is against our motion in the same way when or aircraft goes to motion air against his motion. isn't this phenomena occur we make front shape pointed .

Answer 2

Answer:

Most air crafts and ships have their front shape pointed to reduce the fluid friction.

Explanation:

Whenever a solid object slides down a rough surface, the surface opposes its motion by applying an opposition force on it which is called friction. Similarly, when an object moves in a fluid (gas or liquid), it also opposes the motion of the object which we call fluid friction. Since faster motion is desired on a vehicle through air and water, fluid friction must be reduced in order to reduce the travel time. So, the air crafts and ships have a streamlined body (pointed head). This causes the reduction of fluid friction and helps in the smoother motion of air crafts in the air and ships in the water.