---
name: drag-and-drop-physics-engine
description: Implement fluid drag-and-drop interactions with physics-based animations.
---

# Drag-and-Drop Physics Engine

## Summary
Implement fluid drag-and-drop interactions with physics-based animations.

## Key Capabilities
- Track pointer events.
- Calculate layout collisions.
- Animate reordering with springs.

## PhD-Level Challenges
- Optimize collision detection.
- Handle nested scroll containers.
- Ensure accessibility.

## Acceptance Criteria
- Create a sortable list.
- Demonstrate fluid animations.
- Support keyboard sorting.