Was he in a accident?

If you are injured: 1. Get the medical attention you need asap. 2. File a report with a police officer if possible. 3. Call a personal injury attorney 4. Continue to recover your health and your...

By Accident

Because prepositions can often by exchanged for one another (in this case the prepositions are "by" and or"), either way is grammatically correct in this sentence. I tripped on accident or I tripped...

If you mean something happened that was not intentional, it should be by accident. "The boy stepped on the cat's tail by accident."

You have just committed the crime of hit and run.