What other units do you know that are used to measure speed?

Units of speed include: metres per second (symbol m s−1 or m/s), the SI derived unit; kilometres per hour (symbol km/h); miles per hour (symbol mi/h or mph);

SI unit: m/s, m s−1

Common symbols: v

Dimension: L T−1

idk= i don't know the answer

it wants you to read whatever it gave you. then compare it to the others you read. you need to use textual evidence, and cite anything you do!

hope this !

~courtney