Answer:
v = 341.11 m/s
Step-by-step explanation:
Given that,
The official world land speed was recorded as 1228.0km/h on October 15,1997.
We need to find the speed in m/s.
We know that,
1 km = 1000 m
1 h = 3600 s
So,

So, the required speed is 341.11 m/s.