Mathematics
OpenStudy (anonymous):

Why does the unit of time enter twice in the unit of acceleration?

OpenStudy (***[isuru]***):

Hi, $acceleration = \frac{ velocity\ difference }{ time taken }$ here velocity difference has the same unit as velocity which is ;$ms ^{-1}$ so the unit of acceleration should be something like this..... $acceleration = \frac{ ms ^{-1} }{ s } = ms ^{-1}\times s ^{-1}= ms ^{-2}$ hope this will help ya!!