16 thoughts on “Time, Speed and Distance – 1

  1. Jaikamal, it will not matter, as they are traveling perpendicular to the stream. Water speed will affect them differently in different directions only if traveling parallel to it. Here it will create the same drag whichever side they are moving so net effect is 0 (or rather can be neglected)

    regards
    J

    • Sir, If you are considering 3 times of 120 since P travels thrice his distance then we get 360, however, it only traveled 90 when it returned for the second time and hence traveled 30 less (120-90). So shouldn’t the total distance be 360-30= 330. Can you please explain as to why you subtracted 90 from 360 instead of just the additional 30.

  2. Sir, If you are considering 3 times of 120 since P travels thrice his distance then we get 360, however, it only traveled 90 when it returned for the second time and hence traveled 30 less (120-90). So shouldn’t the total distance be 360-30= 330. Can you please explain as to why you subtracted 90 from 360 instead of just the additional 30.

  3. Sir I have a doubt in this. You said that if the speed is constant then the distance travelled individually by them would be in same multiplication of the total distance travelled by both of them ( i.e. 3) But dont you think it is valid when you start from the same point or in this case it can be applied after they met for the 1st time. its like to problem of fixed and variable part. You have to cover certain fixed amount and then after that it becomes linearly proportional.

    • I am not sure what exactly you are trying to say, but it certainly won’t be analogous to a fixed-variable situation. In TSD, unless otherwise stated, the speed of each individual in the problem remains constant.

      regards
      J

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