Unreal Engine Blueprints Blueprint Physics and Collision

Question 1

Which Blueprint node enables physics simulation on a Static Mesh Component at runtime?

Accepted Answer

Set Simulate Physics

Answer

Enable Physics Body

Answer

Toggle Rigid Body

Answer

Activate Physics

Question 2

Which collision response setting must be set to 'Block' for the WorldStatic channel so a character can walk on a floor?

Accepted Answer

WorldStatic

Answer

Pawn

Answer

WorldDynamic

Answer

Visibility

Question 3

Which Blueprint event fires when two actors with 'Generate Overlap Events' enabled begin touching each other?

Accepted Answer

On Component Begin Overlap

Answer

On Hit

Answer

On Actor Physics Overlap

Answer

On Collision Start

Question 4

What is the key difference between the 'Add Impulse' and 'Add Force' Blueprint nodes?

Accepted Answer

Add Impulse applies an instantaneous push; Add Force applies a continuous force each frame

Answer

Add Impulse applies force every frame; Add Force applies it once

Answer

Add Impulse only works on characters; Add Force works on static meshes

Answer

They are functionally identical

Question 5

Which collision preset is best suited for an invisible volume that should block all actors from passing through?

Accepted Answer

BlockAll

Answer

OverlapAllDynamic

Answer

PhysicsActor

Answer

IgnoreAll

Question 6

Which Blueprint node retrieves a list of all actors currently overlapping a specific component?

Accepted Answer

Get Overlapping Actors

Answer

Query Overlap List

Answer

Get Touching Actors

Answer

Find Overlapping Components

Question 7

When 'Collision Enabled' is set to 'Query Only' on a component, what is the result?

Accepted Answer

The component responds to traces and overlaps but does not simulate physics blocking

Answer

The component blocks all physics objects but ignores traces

Answer

The component participates in physics simulation but not overlap events

Answer

The component is completely invisible to collision queries