An ant on a picnic table travels 30.0 cm to the east, then 15.0 cm to the west. What is the magnitude of the ant's displacement from its original position?
a
15 cm to the west
b
15 cm to the east
c
45 cm to the east
d
45 cm to the west
a
15 cm to the west
b
15 cm to the east
c
45 cm to the east
d
45 cm to the west