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Max and Plank are lost in the woods. They walk 4.0km (W) then head 6.5km (E37degreesN)....

Max and Plank are lost in the woods. They walk 4.0km (W) then head 6.5km (E37degreesN). Finally they crawl 7.0km (S75degreesW). If it took then 2.5 hours to complete this trip, what are their average velocity and average speed in m/s

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