Answer:
343 meters per second (3 sf)
Explanation:
1236km/h is basically 1236km per hour.
1km = 1000 meters
1h = 60 minutes
1m = 60 seconds
Using these rules, we can convert the kilometers and hour to meters and minutes and then to seconds.
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1236km = 1236*1000
= 1 236 000m
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1h --> 1 236 000m
60m --> 1 236 000m
1m --> 1 236 000/60 = 20 600m
60s --> 20 600m
1s --> 20 600/60 = 343m (3 sf)
There are 343 (3 sf) meters per second.