average speed of traffic advancement is 5 m/s . when green and red lights remain open for same duration . to avoid traffic jam at peak hour duration of opening green light is doubled keeping duration same . what is the new speed?
Answers
Answered by
2
Answer:
4m/s
Explanation:
Answer for this question comes 4m/s
Answered by
1
Given:
Average speed of traffic advancement = m/s
To find:
New speed of the traffic.
Solution:
Average velocity in the first case when the red lights and green lights are opened for same duration of time:
v1 = s/ (t+t)
s = 2t*v1
Where s is the displacement of the traffic,
v1 is the average speed,
t is the time duration in which red and green lights remain open.
In the second case, when the green lights re opened for double time, average velocity:
v2 = s/ (2t + t)
the displacement will become double,
v2 = 2*2t*v1 / 3t
v2 = 20/3 = 6.67 m/s
Therefore, the new average speed will be 6.67 m/s.
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