1. चाल ,समय  और दुरी :
    Speed =Distance,Time =Distance,Distance = (Speed x Time).
    TimeSpeed
  2. किमी /घंटा  से  मि /सेकंड  परिवर्तन :
    क  किमी /घंटा  =क  x5मि /सेकंड .
    18
  3. m/sec to km/hr conversion:
    क  मि /सेकंड  =क  x18किमी /घंटा .
    5
  4. If the ratio of the speeds of A and B is a : b, then the ratio of the
    the times taken by then to cover the same distance is1:1or b : a.
    ab
  5. Suppose a man covers a certain distance at x किमी/घंटा  और  an equal distance at y किमी/घंटा. तब ,
    the average speed during the whole journey is2xyकिमी/घंटा .
    x + y