Final answer:
The speed of the car is 60 kilometers per hour (km/h), calculated by dividing the total distance traveled (120 km) by the total time taken (2 hours).
Step-by-step explanation:
To calculate the speed of the car, we will use the formula for average speed, which is the total distance traveled divided by the total time taken. In this case, the car travels 120 kilometers in 2 hours.
Applying the formula:
Average Speed = Total Distance ÷ Total Time
Average Speed = 120 km ÷ 2 h = 60 km/h
Therefore, the speed of the car is 60 kilometers per hour (km/h). This calculation can be essential in various scenarios for planning travel times, fuel consumption, or even during driving tests or understanding the principles of motion.
Instantaneous speed, unlike average speed, is the speed at a specific instant and is what you see on a car's speedometer. However, since the question is asking for the average over a period, that's what we have calculated here.