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Two cars A & B are moving in same direction with velocities 30m/s & 20m/s.When car A is at a distance d behind the car B,the driver of the car A applies brakes producing uniform retardation of 2m/s2.When there will be no collision??? A taxi leaves the station X every 10min.Simultaneously,a taxi leaves the station Y also for station X every 10min.The taxis move at the same constant speed and go from X to Y or vice-versa in 2hrs.how many taxis coming from the other side will each taxi meet enroute from Y to X??

  1. Two cars A & B are moving in same direction with velocities 30m/s & 20m/s.When car A is at a distance d behind the car B,the driver of the car A applies brakes producing uniform retardation of 2m/s2.When there will be no collision???
  2. A taxi leaves the station X every 10min.Simultaneously,a taxi leaves the station Y also for station X every 10min.The taxis move at the same constant speed and go from X to Y or vice-versa in 2hrs.how many taxis coming from the other side will each taxi meet enroute from Y to X??

Grade:7

1 Answers

Sumit Majumdar IIT Delhi
askIITians Faculty 137 Points
8 years ago
Dear student,
Question 1 isnt clear, please check the question again.
For Question 2, any particular taxi from Y to X will meet 13 other taxies going from X to Y.
The reason being, after starting the Taxi from Y would meet 12 taxies, after every subsequent interval of 10 mins and just at the time of starting, one taxi would reach at Y and thereby the total no of taxies being met are equal to 13.
Regards

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