Question : To cover a distance of 216 km in 3.2 hours, what should be the average speed of a car in meters per second?
Option 1: 67.5 m/s
Option 2: 33.75 m/s
Option 3: 37.5 m/s
Option 4: 18.75 m/s
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Correct Answer: 18.75 m/s
Solution :
Given: Total distance = 216 km = 216000 m
Total time = 3.2 hours = 3.2 × 3600 sec
The formula for average speed = $\frac{\text{Total distance}}{\text{Total time}}$= $\frac{216000}{3.2×3600}$ m/s = 18.75 m/s
Hence, the correct answer is 18.75 m/s.
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