Question : To cover a distance of 234 km in 1.6 hours, what should be the average speed of the car in metres per second?
Option 1: 40.625 m/s
Option 2: 146.25 m/s
Option 3: 73.125 m/s
Option 4: 81.25 m/s
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Correct Answer: 40.625 m/s
Solution :
Given: Total distance = 234 km = 234000 m
Total time = 1.6 hours = 1.6 × 3600 sec
The formula for average speed = $\frac{\text{Total distance}}{\text{Total time}}$ = $\frac{234000}{1.6×3600}$ m/s = 40.625 m/s
Hence, the correct answer is 40.625 m/s.
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