Question

What is the displacement of saeed if he begins at HCT, runs for 10 km to carrefour and then returns back to HCT? What is the total distance ?

Steps with details please, thank you ^_^

Answer 1

Difference between Displacement and Distance

1. Displacement `vecs` is a Vector quantity.
   It is the total change in the position of the object with respect to the original position.
   In the question it is given that Saeed begins at HCT, runs and then returns to HCT, i.e ., original position. As such displacement `vecs=0`.
2. Distance `d` is Scalar.
   It relates to total ground covered by the object during its motion.
   It is given that Saeed begins at HCT, runs for 10 km to carrefour and then returns to HCT. Therefore, total distance covered `d=10+10=20\ km`