# Homework Help: Motion and displacement

1. Jan 10, 2010

### rdhddstpchld9

While John is traveling along a straight inter-
state highway, he notices that the mile marker
reads 236 km. John travels until he reaches
the 140 km marker and then retraces his path
to the 173 km marker.
What is John’s resultant displacement from
the 236 km marker?
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