Hi, I’ve recently had this problem with Unity, it’s never happened before and now i can’t finish a tutorial.
Rigidbodies don’t do anything, they stay in the air and don’t fall down. 
Kinematic is Unticked
Gravity Ticked
Can anyone help?
Thanks for reading.
What’s the global ‘gravity’ setting set to?
I’ve checked there and i dont know what im supposed to do.
Ok, but what’s it set to currently?
I haven’t seen a global gravity, all i see is…
Edit > Project Settings> Physics.
Default Material None
Bounces Threshold 2
Sleep Velocity 0.15
Sleep Angular Velocity 0.14
Max Angular Velocity 80
Min Penetration for Per 0.01
Solver Iteration Count 6
Raycasts Hit Triggers (Ticked)
Layer Collision Matrix
And everything is ticked there.
It should be right above Default Material. Are you sure it’s not there? (Maybe something’s changed in the newest version…)
Hmm, i don’t think i’ve updated my Unity in a long time, I’ll redownload and see if it’s there.
Oh! Hang on i found something.
Gravity
X 0
Y -9.81
Z 0
However I’m sure i changed these yesterday to check and there was no change
Ok, if the global gravity is set to a non-zero value and the objects still aren’t moving, I’m not sure off the top of my head what the problem might be.
I don’t use the physics system that much though, so I’m probably not the best person to answer (I’m sure someone else will be able to help out though).
It just randomly stopped working, even character controllers, I guess i’ll start a new project or see if the Unity 3.30 fixes things.
Edit/Project settings/Time
Make sure time scale is set to 1, being the default value. If set to 0, the game is basically on pause.
Only thing I can think of.
Started a new project, but i’ll keep that in mind thanks
I was having the same problem and I checked my Time Scale settings, it seems to have been corrupted “1euc3” or something. Just like to let you know FIX
Alternative solution for those arriving here because their physics is no longer active in the editor:
Check your Project Settings > Physics > Auto Simulation. If unticked, there’s your problem.
i know this was very long ago but if anyone has the problem in 2d then go to Project Settings > Physics 2D>Simulation mode. put it on fixed update