Compute each part of given problemproblem a runner runs 126, Ask an Expert

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Compute each part of given problem:

Problem: A runner runs 1.26 km in 2.5 min and then takes 4.6 min to walk back to the starting point.

Part I: What is the magnitude of the average velocity of the runner for the first 2.5 min?

Part II: What is the magnitude of the runner's average velocity for the time spent walking?

Part III: What is the magnitude of the average velocity for the total trip?

Part IV: What is the average speed for the total trip?

Any help I can get on this problem is really appreciated! I'm not too familiar with this problem. Thanks in advance.

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