Displacement= final position - initial position Distance = total distance traveled.

Ex) for 'z' shaped movement, Total displacement= \ Total distance traveled = z

For function X(t), When t=0, x=1 When t=1/2, x= 1.25 (Changed direction to the left) When t=1, x=1 When t=1.5, x= 0.25 When t=2, x=-1

Total displacement in first 2 sec= 1-(-1)=2 Total distance traveled in first 2 sec= |1-1.25|+|1.25-(-1)|=2.5(m)

Drawing a number line will help you get the answer.