All of the above handkerchief
Well i don’t really understand but i’m guessing you have to do what it says.
3,4 and 5 and contributors to this.
Hope that helps :)
Also,
please make me brainliest, thanks <3
Answer:
Rotational Fans and a Doorknob
Explanation:
The doorknob since it is in motion do to you turning it and rotational fans since they generate mechanical energy do to their motion.