Question: Two trains, each 40 m long are travelling in opposite direction with equal velocity 20 m/s. The time of crossing is
a) 1s
b) 2s
c) 3s
d) Zero
Answers
Answered by
1
Answer:
t =l/v
40/20
= 2 sec. ........
Answered by
0
Given : Two trains, each 40 m long are travelling in opposite direction with equal velocity 20 m/s.
To Find : The time of crossing
Solution:
Two trains, each 40 m long
Hence distance to be covered = 40 + 40 = 80 m
travelling in opposite direction with equal velocity 20 m/s.
Hence net velocity = 20 + 20 = 40 m/s
Time = Distance / Speed
=> Time = 80 / 40
=> Time = 2 secs
Hence The time of crossing is 2 secs.
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