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The stoplights on a street are designed to keep traffic moving at 26 mi/h. the average length of a street block between traffic lights is about 80 m. what must be the time delay between green lights on successive blocks to keep the traffic moving continuously? there are 1.609 × 103 m in a mile. answer in units of s

Respuesta :

We use the formula,

[tex]v = \frac{d}{t}[/tex].

Here, v is velocity and its value given 26 mi/h ( in m/s,  [tex]\frac{26 \times 1.609 \times 10^{3} m}{60 \times 60 s} =11.62 \ m/s[/tex] ) and d is distance and its value is given 80 m.

Substituting these values in above formula we get,

[tex]t = \frac{80 m}{11.62m/s } = 6.88 \ s[/tex]

Thus, the time delay between green lights on successive blocks to keep the traffic moving continuously is 6.88 s


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