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Question
The speed of a car is 54 km/hr. What is its speed in m/sec?
Options:
A .  150 m/sec
B .  194.4 m/sec
C .  19-44 m/sec
D .  15 m/sec
Answer: Option D
Answer: (d)1 kmph = $5/18$ m/sec54 kmph = $5/18 × 54$= 15 m/sec.

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