1. Alishba wakes up late and runs to school, covering a distance of 2.55 km in a direction of [N20 degrees E] as measured from her home. She then realizes that her friend Hawi has her homework and races over to his house 0.5 km away [W] from the school. The two friends then decide it's not worth going to class late so they go off to the mall that is 2.8 km [W 50 degrees S]. a) What is Alishba's total displacement? b) If the total time taken by Alishba to run to school then over to the friend's house was 25 minutes, what was her average velocity?