Unity Unity Physics and Animation 2

Question 1

What is the difference between a Static Collider and a Dynamic Collider in Unity?

Accepted Answer

Static colliders have no Rigidbody and don't move; dynamic colliders have a Rigidbody and can move

Answer

Static Colliders lack a Rigidbody and are intended for immovable geometry, while Dynamic Colliders have a Rigidbody and participate fully in physics simulation.

Question 2

In Unity's Animator, what is an 'Avatar' used for?

Accepted Answer

Mapping a humanoid skeleton to Unity's standard bone structure for retargeting animations

Answer

An Avatar maps a model's skeleton to Unity's humanoid rig definition, enabling animation retargeting between different humanoid characters.

Question 3

Which Rigidbody property controls how much air or fluid resistance is applied to slow linear motion?

Accepted Answer

Drag

Answer

The Drag property applies linear resistance to a Rigidbody, simulating air or fluid friction slowing down linear movement.

Question 4

What does the Physics.Raycast() function return in Unity?

Accepted Answer

A boolean indicating whether the ray hit a collider, plus hit information

Answer

Physics.Raycast() returns true if the ray intersects a collider and fills a RaycastHit struct with details about the hit point, normal, and object.

Question 5

In Unity animation, what is the purpose of an Animation Layer?

Accepted Answer

To stack multiple independent animation state machines that can blend or override each other

Answer

Animation Layers allow you to run separate state machines simultaneously, such as playing an upper-body reload animation while lower-body locomotion continues.

Unity Practice Test

Unity Practice Test

Unity Unity Physics and Animation 2