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heatherly1004

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**Help with physical sci problems!**

Hey i was just wondering if any of you knew how to do these problems... i have homework due and i don't understand these

thanks so much!

1. 2 ants race across a table 67 cm long. One travels at 4.14 cm/s and the other at 3 cm/s. When the first one crosses the finish line, how far behind is the second one? Answer in units of cm.

2.While John is traveling along a straight interstate highway, he notices that the mile marker reads 252 km. John travels until he reaches the 149 km marker and then retraces his path to the 168 km marker.

What is Johns resultant displacement from the 252 km marker? answer in units of km