A120 m ling train moving with a speed of20 m,/s abd a train B ismoving with ,30m/sin the opposite direction and 130 m long crosses the first train in a time
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The relative speed for approaching bodies is the sum of their speeds.
The relative speed is thus :
20 + 30= 50m/s
The relative distance covered is :
130m + 120 m = 250 m
Time = Distance / speed
Time = 250/50 = 5 seconds
Time is therefore 5 seconds
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