Unity Unity Physics and Animation

Question 1

Which component must be attached to a GameObject to enable Unity's physics simulation on it?

Accepted Answer

Rigidbody

Answer

The Rigidbody component enables physics simulation, allowing GameObjects to respond to gravity, forces, and collisions.

Question 2

What is the primary purpose of a Collider component in Unity?

Accepted Answer

To define the physical shape for collision detection

Answer

Colliders define the physical shape used for collision detection and are separate from the visual mesh.

Question 3

Which Unity physics method should be used to move a Rigidbody in a physics-safe way each fixed frame?

Accepted Answer

MovePosition() in FixedUpdate()

Answer

MovePosition() called inside FixedUpdate() ensures physics-safe movement synchronized with the physics engine.

Question 4

In Unity's Animation system, what is an Animator Controller used for?

Accepted Answer

Managing state machines and transitions between animations

Answer

An Animator Controller manages the state machine that controls which animation clips play and when transitions between them occur.

Question 5

What does the 'Is Trigger' checkbox on a Collider do?

Accepted Answer

Makes the collider detect overlaps without physical collision response

Answer

Marking a Collider as a trigger allows it to detect overlapping objects via OnTriggerEnter/Exit without generating a physical collision response.

Unity Practice Test