setting-up-physics

To set up Unity physics collisions and gravity, you add a Rigidbody component to your selected object and enable the useGravity property. You also need to add Colliders to define physical boundaries for interaction detection.

To make game objects bounce realistically in a simulation, you apply Physics Materials to their Colliders. Customizing Physics Material properties like bounciness and friction controls how objects react when hitting surfaces.

To configure a Rigidbody for force-based movement without automatic falling, you enable the isKinematic property. This disables physics-driven gravity and collisions, allowing scripts to drive the object while still detecting interactions.

You need mesh Colliders for complex physical boundaries that match an object's exact shape, whereas primitive Colliders like boxes or spheres are used for simple objects to optimize physical interaction detection.

Yes, applying a Physics Material affects both bounciness and friction during collisions. It allows you to customize the surface properties of Colliders to define how objects slide and tumble upon impact.

A Unity Rigidbody falls through other objects during a collision if it lacks a Collider component. Defining physical boundaries with primitive or mesh Colliders ensures that interaction detection works and prevents overlapping.