A and B start from the same place along the same road at the same time. A's speed is 2m / s, B's speed is 3m / s, after 5 minutes How far away are they from each other? There are two kinds of solutions, both written out, and there must be a process

5 minutes later, B driving: 3x5x60 = 900 m, a driving: 2x5x60 = 600 m
Distance: 900-600 = 300m
The relative speed of a and B is (3-2) = 1m / s, that is, when a is not moving, the distance between B and B after driving for 5min is 1m / s x 5 x 60s = 300m
Boy, learn hard

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