Assess your knowledge of Unity's Rigidbody component and its advanced physics interactions with this in-depth quiz!

Transform

Rigidbody

BoxCollider

ParticleSystem

Which Unity component is essential for an object to respond to 3D physics forces?

useGravity

mass

drag

isKinematic

Which property ensures an object’s velocity is unaffected by collisions or forces while still using physics?

Switch to a UI layer

Apply negative gravity

Increase the timescale

Raise friction via physics material or angular drag

How can you make a Rigidbody rest on a surface without sliding due to small slopes or rounding errors?

AddForce(..., ForceMode.VelocityChange)

AddExplosionForce

AddForce(..., ForceMode.Impulse)

MovePosition

Which method in the Rigidbody class applies a sudden velocity change, ideal for short bursts?

velocity

collisionDetectionMode

angularDrag

centerOfMass

Which property on a Rigidbody affects how quickly the object’s rotation slows on its own?

Overwrite the Transform’s rotation each frame

Use AddExplosionForce with a direction vector

Assign a new velocity in LateUpdate

Call AddTorque() with an appropriate Vector3

How do you apply torque to a Rigidbody around a custom axis in 3D for rotational motion?

Discrete detection

Kinematic collision

Continuous Dynamic

Local overlap checks

Which setting helps avoid tunneling for high-speed bodies at the cost of increased CPU usage?

Remove the collider from the object

Toggle isKinematic or apply constraints

Stop applying gravity in FixedUpdate

Multiply mass by zero

How do you override physics-based movement briefly (e.g., a cutscene) without disabling the Rigidbody entirely?

Lower the Time.timeScale

Put the object in a UI layer

Use isTrigger on the collider

Increase friction or angular drag

A rigidbody slides too quickly on slight inclines; how can you minimize unwanted sliding?

It shortens the fixed timestep

It doubles collision checks

It smooths the object’s movement between physics updates

It changes the solver order

Why might enabling interpolate on a Rigidbody help visuals in a 60 FPS game?

Lower solver frequency drastically

Use raycasts or a custom suspension approach

Enable isKinematic at top speed

Switch to 2D physics

When simulating a vehicle with a Rigidbody, how can you keep stable ground contact at high speeds?

AddForce only works if mass is negative

It’s required for triggers to function

MovePosition updates the transform predictably in FixedUpdate

MovePosition is only for 2D physics

Why might you call MovePosition() instead of AddForce() for a kinematic-type movement on a Rigidbody?

ForceMode.Impulse

ForceMode.VelocityChange

ForceMode.Acceleration

ForceMode.Explosion

Which ForceMode instantly changes velocity, ignoring the Rigidbody’s mass?

Use OnTriggerStay for advanced constraints

Write a custom solver or adopt DOTS Physics/ECS

Child the object to Cinemachine

Force everything to remain kinematic

Which approach helps implement constraints beyond built-in joints for complete control over physics behavior?

Employ client-side prediction with server reconciliation

Send transform updates only on scene load

Run at 15 FPS on both client and server

Use OnGUI to correct positions each frame

How can advanced network synchronization be handled so local illusions of momentum remain while final authority rests with the server?

Set all VR objects to triggers

Scale them down to a fraction

Use partial kinematic control with velocity limits

Convert VR collisions to 2D

In VR with physically interactive Rigidbodies, how can you stop them from snapping if users move them quickly?

Use 2D physics for all sub-scenes

Share or sync a single physics scene across loaded scenes

Destroy rigidbodies in secondary scenes

Force them to run at half the framerate

For a multi-scene architecture using heavy physics, how can you handle cross-scene collisions or stable performance across additive scenes?

Unity: Rigidbody