Which of the following is the maximum speed?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 2500 m/min.
Speeds can be compared only in one unit, so each is changed to km/hr (1 km = 1000 m, 1 hr = 60 min = 3600 s).
35 m/sec \(\displaystyle =35\times\frac{3600}{1000}=126\) km/hr
2500 m/min \(=2500\times60=150000\) m/hr \(=150\) km/hr
90 km/hr stays 90 km/hr
98000 m/hr \(=98\) km/hr
The highest is 150 km/hr, that is, 2500 m/min