Speed of an aircraft is 120 km/min. This speed in m/sec is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 2000.
The speed of an aircraft is 120 Km /min.
Time × Speed = Distance
1m/s = 18/5 km/h
The aircraft in 1 minute goes = 120 km
So, the aircraft in 60 minutes goes = 120 × 60 = 7200 km
Speed of the aircraft = 7200 km/h
Now, the speed of the aircraft = 7200/(18/5) = 2000 m/s