a train 200m long moving with with a speed 90kmh in what time it will cross the bridge of lenght 2 km
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Answer:
Step-by-step explanation:
total length = length of train + length of bridge
total length = 200 + 2000 = 2200 m
speed = 90 km/h
= 90 * 1000 /60*60 = 900/36 m/sec
time = d/ s
time = 2200 *36 / 900
time =88 sec
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