The stoplights on a street are designed to keep traffic moving at 34 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.
V=34mi/h * 1609m/mi * 1h/3600s.=15.2 m/s.
d = V*t = 80 m.
15.2t = 80.
t = 5.3 s.
Why did the traffic light go to therapy? Because it had too many green-light issues!
To calculate the time delay between green lights on successive blocks, we need to find the time it takes for a car to cover the distance between two blocks at a speed of 34 mi/h.
First, let's convert the speed from miles per hour to meters per second:
34 mi/h = (34 miles * 1.609 * 10^3 meters)/(1 hour * 3600 seconds) = 15.26 m/s.
Next, we need to find the time it takes for a car to travel 80 m at a speed of 15.26 m/s:
Time = Distance/Speed = 80 m / 15.26 m/s ≈ 5.24 s.
Therefore, the time delay between green lights on successive blocks to keep the traffic moving continuously should be approximately 5.24 seconds.
To find the time delay between green lights on successive blocks, we need to first calculate the time it takes for a car to travel one block at a speed of 34 mi/h.
First, let's convert the speed from miles per hour (mi/h) to meters per second (m/s). Since there are 1.609 × 10³ meters in a mile and 3600 seconds in an hour, we can convert the speed as follows:
34 mi/h * (1.609 × 10³ m/1 mi) * (1 h/3600 s) = 15.2167 m/s (approximately)
Now, we can calculate the time it takes for a car to travel one block (80 m) at a speed of 15.2167 m/s. Using the formula:
Time = Distance / Speed
Time = 80 m / 15.2167 m/s
Time = 5.254 s (approximately)
Therefore, the time delay between green lights on successive blocks should be approximately 5.254 seconds to keep the traffic moving continuously.