Final answer:
To calculate the distance traveled, convert the time of 3.5 hours to seconds and multiply it by the speed of 10 m/s. The result is 126,000 meters, which makes the correct answer D) 12,600 meters.
Step-by-step explanation:
The question involves calculating the distance traveled by an object moving at a constant speed over a period of time. To find the distance, we use the formula distance = speed × time. Here, the speed is given as 10 m/s and the time is given as 3.5 hours. First, we need to convert the time from hours to seconds since the speed is in meters per second (m/s). There are 3600 seconds in one hour, so 3.5 hours is equal to 3.5 × 3600 seconds. Multiplying the speed by the converted time will give us the distance.
Distance = 10 m/s × (3.5 × 3600 s) = 10 m/s × 12600 s = 126,000 meters. Therefore, the correct answer is D) 12,600 meters.
It is always good to check whether the answer is reasonable by considering the information provided in the problem. Indeed, if you travel at 10 m/s for one second, you'll cover 10 meters, and for 3.5 hours, you would expect to travel a much greater distance. Thus, the computed value is reasonable.