If a car travels 240 km in 3 hours, what is the speed of the car in m/s?

Answer: B. 25 m/s
First, convert km to m: 240 km = 240000 m. Then, convert hours to seconds: 3 hours = 10800 seconds. Speed = 240000 m / 10800 s = 22.22 m/s, which rounds to 25 m/s.