If the question is about the doorknob the answer is "None". And if it not about the doorknob, maybe you should have said what you are referring to!
Chat with our AI personalities
(3,000/minute) x (minute/60 seconds) = 50/second
80.6666667 feet per second
44 feet per second = 30 mph
146.6 feet per second.
3,000 feet per second = 2,045.45 mph