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The stoplights on a street are designed to keep traffic moving at 24 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 :

Answer:

t = 7.5 s

Explanation:

As we know that the average speed between two lights is given as

[tex]v = 24 mph[/tex]

here we know that

[tex]v = 24 \times \frac{1602 m}{3600 s}[/tex]

[tex]v = 10.68 m/s[/tex]

now the distance between two lights is 80 m

so here if all the cars are moving continuously between two lights then the time delay between two lights is given as

[tex]t = \frac{L}{v}[/tex]

[tex]t = \frac{80}{10.68}[/tex]

[tex]t = 7.5 s[/tex]

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