Time and Distance

• Speed, Time and Distance:
  
  

Speed =		Distance		,	Time =		Distance		,	Distance = (Speed x Time).
		Time					Speed




• km/hr to m/sec conversion:
  
  

  x km/hr =		x x	5		m/sec.
  			18

• m/sec to km/hr conversion:
  
  

  x m/sec =		x x	18		km/hr.
  			5

• Suppose a man covers a certain distance at x km/hr and an equal distance at ykm/hr. 
  
  
  then,  
  
  
  the average speed during the whole journey is2xy / (x+y)km/hr