It's all about...rate

Replies

• 

  Ankita Katdare

  The answer should be 8 Hours.
  
  When B left, A was at 12 km. After 8 hours B met A at a distance of 60 km.
  
  Correct me if I am wrong.
• 

  makru921

  This should make it simple:
  After: 1 hour 2hrs 3hrs 4hrs 5hrs 6hrs 7hrs 8hrs 9hrs 10hrs
  Distance of A: 6 12 18 24 30 36 42 48 54 60
  Distance of B: 0 0 4 9 15 22 30 39 49 60
  
  So the answer is 8 hours after A leaving. Just as AKD says😀
• 

  maria flor

  THanks by the way... it was a great help....
• 

  maria flor

  Here is another problem:
  The velocity of a particle moving along X axis is defined by v=(x^3)-(4x^2) +6x where v is in feet per second and x in feet. Compute the value of the acceleration when x=2ft.
• 

  Morningdot Hablu

  It's a vary simple question....please improve the label.
  .
  by the way answer is 2ft/(s^2).
  diff both side with respect to time and then put the value of x you get the answer.
• 

  maria flor

  @ mohit: Your answer is wrong, since you cannot diff both side with respect to time...the variable on the right side is not t it's x.