SOLUTION: A train travels in a straight line at 20 m/s for 2 km, then at 30 m/s for another 2 km. Calculate the average speed for this trip in meters per second.

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Question 903717: A train travels in a straight line at 20 m/s for 2 km, then at 30 m/s for another 2 km. Calculate the average speed for this trip in meters per second.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Avg = 2*20*30/(20+30)
= 24 m/sec