SOLUTION: you drove for 2 hours at 28 m/s and then took 30 minute break for coffee. you then drove 324 km at 30 m/s. what is your average speed for the entire trip?

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Question 1101588: you drove for 2 hours at 28 m/s and then took 30 minute break for coffee. you then drove 324 km at 30 m/s. what is your average speed for the entire trip?
Found 2 solutions by Alan3354, greenestamps:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Avg = total distance/total time

Answer by greenestamps(13215) About Me  (Show Source):
You can put this solution on YOUR website!


For the first part of the trip, the distance driven was



For the second part of the trip, you drove 324km = 324000m at 30m/sec; the amount of time that took is 324000%2F30+=+10800 seconds, which is 10800/3600 = 3 hours.

So for the entire trip, you traveled 100.8+324 = 424.8 km in 2+3=5 hours; your average speed was 424.8/5 = 84.96 km/hr.