Time and Distance

 Time and Distance

1. Formula of Speed

   Speed =(Distance/Time)


   So Formula of speed is, speed is equal to distance upon time. If you remember this formula then you will learn next two formula two.

2. Formula of Time 

   Time =(Distance/Speed)


   So Formula of time is, time is equal to distance upon speed.

3. Formula of Distance 

   Distance = (Speed * Time)

   So distance is simply speed into time. All three formulae that formula of speed, formula of time and formula of distance are interrelated.

4. Convert from kph(km/h) to mps(m/sec)
   For converting kph(kilometer per hour) to mps(meter per second) we use following formula

   xkm/hr=(x*5/18)m/sec


6. Convert from mps(m/sec) to kph(km/h)
   For converting mps(meter per second) to kph(kilometre per hour) we use following formula

   xm/sec=(x*18/5)km/h



7. 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 is
   1/a:1/b or b:a


8. Suppose a man covers a certain distance at x km/hr and an equal distance at y km/hr. Then,
   the average speed during the whole journey is
   (2xy/x+y)

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