Question : The speed of a car is 54 km/hr. What is its speed in m/sec?
Option 1: 15 m/sec
Option 2: 19.44 m/sec
Option 3: 194.4 m/sec
Option 4: 150 m/sec
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Correct Answer: 15 m/sec
Solution :
Speed of the car = 54 km/hr
We know that 1 km/hr = $\frac{5}{18}$m/sec
$\therefore$ 54 km/hr = 54 × $\frac{5}{18}$m/sec = 15 m/sec
Hence, the correct answer is 15 m/sec.
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