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This is a question from SGC Common Entrance Examination without answers. You may need to use your knowledge of the speed, distance and time formulas!
I would first convert the time into hours so
90 secs=90/60minutes=1.5 minutes=1.5/60 hours=0.025hours
Then convert the distance into km so
2*600 (as two laps)= 1200m=1200/1000km=1.2km
Then use speed=distance/time
Hope this Helps! :)
Thanks guys, I didn't simplify the question before using the speed, distance and time formula. Now I realise my mistake!!!
Speed= distance/time so speed=1200m/90seconds.
notice the units are m/s. You need km/h.
3.6 x 13.33 = 47.98km/h
That should be right. Sorry if it's not but I don't see how it could be wrong!
Rember the triangle?
s d^ t
yue hav the distance and time soo as far as I know do > d/t> 600m/90= 6.66 m/s < NOT SURE ABWT THE UNIT THOU
Hope this helped : D