Karen ran a 400 meter race in 60.4 seconds and Kim ran 0.3 kilometers in 65.8 seconds. Who ran faster and why
60.4 / 400 = 0.15 meters per second
65.8 / 300 = 0.22 meters per second
To determine who ran faster, we need to convert both Karen's distance (400 meters) and Kim's distance (0.3 kilometers) into the same unit of measurement. Let's convert Kim's distance into meters:
Given that 1 kilometer equals 1000 meters, we can convert Kim's distance by multiplying 0.3 kilometers by 1000:
0.3 kilometers * 1000 meters/kilometer = 300 meters
Now that both distances are in meters, we can compare the times. Karen ran 400 meters in 60.4 seconds, while Kim ran 300 meters in 65.8 seconds.
To compare their speeds, we need to calculate their average speed. Speed is defined as distance divided by time. So, we can find their speeds as follows:
Karen's speed = 400 meters / 60.4 seconds ≈ 6.62 meters/second
Kim's speed = 300 meters / 65.8 seconds ≈ 4.56 meters/second
Comparing their speeds, we can see that Karen ran faster than Kim because her speed (6.62 meters/second) is greater than Kim's speed (4.56 meters/second).