The speed of the cyclist between two points S1 and S2 as shown in figure is:
Correct answer: C. 30 km h-1
- A. 10 km h-1
- B. 20 k/m h-1
- C. 30 km h-1
- D. 50 km h-1
Explanation
The following is the solution: The cyclist travels a total distance of 20 km, but they do it in 20 minutes, not 1 hour. That means their speed is 20 km / 20 minutes = 30 km/h. The total distance traveled by the cyclist is 20 km, and the time it takes them to travel the total distance is 20 minutes. Converting the time from minutes to hours, we get 20 minutes = 20/60 hours = 1/3 hours. Substituting these values into the speed formula, we get: Speed = 20 km / (1/3) hours = 30 km/h
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