Question

The maximum speed of the Tupolev Tu -144 airliner is 694 m/s. What is this speed in kilometers per hour?

Answer 1

Answer: the correct answer would be 2498.4 km/h

*i got this question correct*

Answer 2

The answer is 2498.4km/h

The speed is
`694m/s = (694m)/(1s)`

1 m = 0.001 km ⇒ 694 m = 694 * 0.001 km = 0.694 km
1 h = 60 min = 60 * 60 s = 3600 s

Therefore:

`(694m)/(1s)= (3600*0.694km)/(3600s) = (2498.4km)/(1h) =2498.4km/h`