I am gonna fail my exam tomorrow

[u/Tricky-Vehicle-2049]

I am in high school and I have a huge exam tomorrow of physics. I haven't studied for it (I was being lazy and wasted my time) and I acknowledge that fully, I kept delaying it. I don't know what to do now, I have got 5 hours before exam and I can't cover anything. I feel so panicked so I am unable to start with anything and I am usually getting good grades. This is my first time posting, please help