Why plastics are considered over metals in aircrafts and spacecrafts?

Explanation

**Step-by-Step Solution:**

1. **Lightweight Nature of Plastics:**
- Plastics are significantly lighter than metals. In aircraft and spacecraft, weight is a critical factor because it affects fuel efficiency and the ability to achieve flight. The lighter the material, the easier it is for the aircraft or spacecraft to lift off and maneuver.

2. **Ease of Handling:**
- Plastics are generally easier to handle and work with compared to metals. They can be molded into various shapes and sizes without the need for complex machinery. This makes the manufacturing process more efficient and cost-effective.

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