Answer to Question #96441 in Mechanics | Relativity for Abdalla

Question

A car traveled 20 km to the east, then it moved back 10 km to
the west. And finally, it traveled 50 km to the east. what is the car
total displacement?*

Answer 1

$S = \sum_{n} | \vec{S_n} |$

where $S$ - total displacement, $| \vec{S_n} |$ - displacement with considering of direction.

$S = 20-10+50=60 \; km$

Answer: 60 km to the east.