We know, 1 km/hr = 518 m/s
⇒ 1 m/s = 185 km/hr
Now, 30 m/s = 30 × 1 m/s = 30 × 185 km/hr = 6 × 18 km/hr = 108 km/hr
30 ms = ___ km/h
1 m/s = ____ km/hr
30 ms = ___
108 km/h =___ m/s