QuestionReportPhysics Question on Units and measurementS.I. unit of velocity isAkm h−1km \,h^{-1}kmh−1Bm sec−1m\, sec^{-1}msec−1Cm hr−1m \,hr^{-1}mhr−1Dm/hrm/hrm/hrAnswerm sec−1m\, sec^{-1}msec−1ExplanationSolutionAnswer (b) m sec−1m\, sec^{-1}msec−1