UCA Game Physics & Animation 3

Question 1

Which component would you add to a GameObject to simulate cloth physics in Unity?

Accepted Answer

Cloth

Answer

Unity's Cloth component simulates cloth-like physics on a mesh, responding to forces and colliders.

Question 2

What is the role of a Physics Material (PhysicMaterial) in Unity?

Accepted Answer

It sets friction and bounciness properties for collision surfaces

Answer

A PhysicMaterial stores friction (static/dynamic) and bounciness (restitution) values that affect how colliders interact.

Question 3

What does 'Root Motion' refer to in Unity animation?

Accepted Answer

Movement of the GameObject driven by animation clip motion data rather than code

Answer

Root Motion lets the animation clip itself move the character's Transform, using baked displacement data from the animator.

Question 4

Which type of Joint constrains two Rigidbodies so they maintain a fixed distance apart, like a rod?

Accepted Answer

Spring Joint

Answer

A Spring Joint keeps two Rigidbodies at approximately a set distance using spring forces, though a ConfigurableJoint with locked linear limits acts as a true rigid rod.

Question 5

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

Accepted Answer

Restricting which body parts are affected by a specific animation layer

Answer

An Avatar Mask lets you specify which skeleton bones an Animator layer applies to, enabling upper/lower body animation separation.

(UCA) Unity Certified Associate Game Developer Practice Test

(UCA) Unity Certified Associate Game Developer Practice Test

UCA Game Physics & Animation 3