Answer:
1.To do something without thinking and/or without care.
and
2.Something moving quickly and vigorously.
Explanation:
There are two definitions of this word. When writing an essay or narrative make sure you add adjectives and nouns to make sure the audience knows which definition you are using.
One example of the 1st definition would be:
"My friends were all staring at me, I had no time to think. I skated down the steep hill impetuously."
One example of the 2nd definition would be:
"The water was flowing down with such impetuous, I felt like it could've swept me down at any moment."
Benjamin Franklin published it
I gotcu fam lol xD 3884723
