if A and B are travelling from a same point at 8am. if A goes east with 65m/s and B goes south with 60m/s. what will be the time when they are 130m apart?

• Ans: 08:00:00 + 1.47sec
  
  (65*x)^2 + (60*x)^2 = 16900
  
  x^2(7825)=16900
  
  x^2 = 2.1597.
  By solving we get x= 1.47 sec (approx)
  
  Here is explanation....
  
  A is travelling towards east with speed of 65 m/s.
  B is travelling towards south with speed of 60 m/s.
  The distance between them is 130 m.
  
  In one sec, A travels 65 m and B travels 60 m.
  65^2+60^2=7825
  But we have to get 16900(130*130) by following Pythagorean theorem.
  
  Let check for 2 sec, the value
• 9 years agoHelpfull: Yes(17) No(0)
• solve using pyth theorem of right triangle answer is 2 hours or 10:00am
• 9 years agoHelpfull: Yes(1) No(0)
• Answer is 1.47sec
• 9 years agoHelpfull: Yes(1) No(0)
• after 1.47 sec. the distant b/t them will be 130m
• 9 years agoHelpfull: Yes(1) No(0)
• not 130m
  it is 130miles
• 9 years agoHelpfull: Yes(1) No(0)
• 2hrs by using pytgarus theorem
  
• 9 years agoHelpfull: Yes(0) No(0)