54. A train runs at a speed of 80km/hr.If the length of the train is 400m,how long will it take for it to cross
an electric pole?
a) 10 Seconds b ) 6 Seconds c) 18 Seconds d) 15 Seconds
Answers
Answered by
6
Answer:
18 sec
Step-by-step explanation:
s = 80km/hr = 80 × 5/18 = 400/18 m/s
time it will take
=400/400/18= 18 sec
option (c) is correct
Answered by
14
Answer:
Speed = Distance/Time
Speed in m/s = 80 × 5/18 = 200/9 m/s
200/9 = 400 / t
t = 400 × 9/200
t = 18 secs
Option C). is correct.
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