The problem describes a car moving at a constant speed. Two photographs of the car were taken. The second photograph was taken 0.5 seconds after the first. The distance between equally-spaced lines on the road is 1.7 m. The goal is to calculate the speed of the car in m/s, rounded to one decimal place.

1. Problem Description

The problem describes a car moving at a constant speed. Two photographs of the car were taken. The second photograph was taken 0.5 seconds after the first. The distance between equally-spaced lines on the road is 1.7 m. The goal is to calculate the speed of the car in m/s, rounded to one decimal place.

2. Solution Steps

First, determine the number of lines the car has passed between the two photos. From the images, we can see that the car moved past one line in the 0.5 seconds between the two photos.

Next, calculate the distance the car traveled between the two photos. Since the car moved past one line and the distance between the lines is 1.7 m, the car traveled 1.7 m.

Finally, calculate the speed of the car using the formula:

$speed = distance / time$

$speed = 1.7 m / 0.5 s$

$speed = 3.4 m/s$

3. Final Answer

3. 4 m/s