The table below shows the time taken by 4 boys cycling over the same distance, 400 m. What is the difference in speed between the fastest to the slowest? Jian Kang Xiao Le Bing Wei Jun Kai Time recorded in seconds 32 25 50 40
Question
The table below shows the time taken by 4 boys cycling over the same distance, 400 m. What is the difference in speed between the fastest to the slowest? Jian Kang Xiao Le Bing Wei Jun Kai Time recorded in seconds 32 25 50 40
Solution
To find the difference in speed between the fastest and the slowest cyclist, we first need to calculate the speed of each cyclist. Speed is calculated by dividing the distance by the time. In this case, the distance is 400m for all cyclists.
- For Jian Kang, the speed is 400m/32s = 12.5 m/s.
- For Xiao Le, the speed is 400m/25s = 16 m/s.
- For Bing Wei, the speed is 400m/50s = 8 m/s.
- For Jun Kai, the speed is 400m/40s = 10 m/s.
From the calculations, we can see that Xiao Le is the fastest cyclist with a speed of 16 m/s and Bing Wei is the slowest cyclist with a speed of 8 m/s.
The difference in speed between the fastest and the slowest cyclist is therefore 16 m/s - 8 m/s = 8 m/s.
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