A speed of 11 metres per second is the same as :  Choose one:
A) 50.4 km/hr B) 55 km/hr C) 60 km/hr D) 68.5 km/hr E) 39.6 km/hr
Sol.   11 m/sec = [11 * 18/5] km/hr = 39.6 km/hr.   Answer 39.6 km/hr
<result>E</result>
A speed of 11 metres per second is the same as :