Drag race qualifying velocity

  • Thread starter hannah2329
  • Start date
  • #1
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Homework Statement



to qualify for a race a car must achieve an average speed of 254 km/hr on a track 1600 meters long. if a car covers half the track with an average speed of 227.5 km/hr what minimum average speed must it have the second half to qualify?

Homework Equations


speed=distance/time


The Attempt at a Solution


my teacher told us to find the time it took for the first half and i did that by converting 227.5km/hr and getting 63.19m/s=800/t and got 12.6 seconds for the first half. he told us we could use this to solve the problem but im really confused on how to do that.
 

Answers and Replies

  • #2
PhanthomJay
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If the average speed must be 254 km/hr for the 1600 m trip, what must be the total time for the trip?
 
  • #3
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thank you! i got it right!
 

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