0Concept Post 2: Time when two objects meets for the first time When they are running around a circular track in the same direction.
Let us assume there are two persons (A) and (B) .
Speed of A = 20 m/s.
Speed of B = 10 m/s.
Length of Track = 1000 m.
Try to visualise, they will meet the first time when A has covered 1000m distance more than B. Hence the relative distance is 1000.
Now let's assume A and B to be one single body, and hence everything considered will be relative,
Relative Distance = 1000
Relative Speed = 20-10 = 10
Time taken = Relative Distance/Relative Speed = 1000/10 = 100s
Hence they will meet for the first time after 100 seconds.
