To find the net force on the object, we need to consider the direction and magnitude of both forces.
- The first force is 30 N directed west.
- The second force is 12 N directed east.
Since west and east are in opposite directions, we can find the net force by subtracting the magnitude of the eastward force from the magnitude of the westward force:
Net force = 30 N (west) - 12 N (east)
To solve this, we can think of east as positive and west as negative:
Net force = 30 N (−) - 12 N (+) = 30 N - 12 N = 18 N (west)
So, the net force on the object is 18 N west.
Thus, the correct response is: 18N west.