## Raj travels 250 miles to North but then back-tracks to South for 105 miles to pick up a friend. What is Raj’s total displacement?

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## Answer ( 1 )

Solution:_{i}= 0.His final position X

_{f}is the distance travelled to North minus the distance to South i.e. (250 N – 105 S)=145 N .We need to calculate the displacement, i.e. D

We know that,

Displacement is defined as the change in position of an object

D = ΔX =Final Position – Initial Position = (X

_{f}– X_{i})D = 145 N – 0

D = 145 mi N