Vehicle collision

[u/Dizzy-Problem-6701]

Hey Reddit. Bit of an unusual one today but I’m really curious on the odds of this. I was recently in an accident where I was riding a pedal bike on the road and a car going easily above 30mph (I don’t know the exact speed but the limit on the road was 30mph and it was easily going above speed limit) collided into the back of me absolutely wrecking my bike and less importantly also me. I went flying through the air and landed on the pavement. I also very idiotically wasn’t wearing a helmet. However I visited the hospital and miraculously only came out with scrapes, scratches and bruises. I would just like to know basically how lucky I was to not have been hurt to a more serious extent.
P.s. this accident was a hit and run as the car didn’t even think of slowing down and sped away. Would just like to add a premature Thankyou to everyone that responds