answersLogoWhite

0

"Second" is a unit of time. "Mile per hour" is a unit of speed. These two units are

used to describe completely different physical quantities, and neither one can be

converted into the other one.

Would you ask someone "How many miles per hour can you hold your breath ?"

Have you ever seen a traffic sign that said "Speed Limit 60 Seconds" ?

User Avatar

Wiki User

14y ago

What else can I help you with?