Question : To cover a distance of 225 km in 2.5 hours, what should be the average speed of a car in meters per second?
Option 1: 90 m/s
Option 2: 45 m/s
Option 3: 50 m/s
Option 4: 25 m/s
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Correct Answer: 25 m/s
Solution :
Given: Total distance = 225 km
Total time = 2.5 hours
The formula for average speed = $\frac{\text{Total distance}}{\text{Total time}}$ = $\frac{225}{2.5}$ km/h
Now, converting it to meters per second
$\frac{225}{2.5}×\frac{5}{18}$ = 25 m/s
Hence, the correct answer is 25 m/s.
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