Answer:
The displacement traveled by the elephant is 9600 east
Step-by-step explanation:
Displacement is defined as an object's change in position which is given by the difference between final and initial location of the object
The displacement of the elephant are, taking east as positive direction of motion;
1) 7.9 km east = + 7.9 km
2) 1.9 km west = -1.9 km
3) 3.6 km east = 3.6 km
The net (sum) displacement of the elephant, ∑Δx is given as follows;
∑Δx = 7.9 km - 1.6 km + 3.6 km = 9.6 km
Given that the sum of the displacement is positive and that 9.6 km = 9600 m, we have;
The displacement traveled by the elephant = ∑Δx = 9600 east.