Question

a car covers a distance of 112.6 km in 1.8 h. what is its speed in meters per second? a) 17.5 m/s

Explanation:

Step1: Convert distance to meters

The distance is 112.6 km. Since 1 km = 1000 m, we multiply by 1000: $112.6\times1000 = 112600$ m.

Step2: Convert time to seconds

The time is 1.8 h. Since 1 h = 3600 s, we multiply by 3600: $1.8\times3600 = 6480$ s.

Step3: Calculate speed

Speed is distance divided by time, so $v=\frac{112600}{6480}\approx17.5$ m/s.

Answer:

17.5 m/s