You are driving due north on i-81 to come to jmu with a speed of 10 m/s, suddenly you realize you forgot your book. you make a u-turn to go home, pick it up and now after 20s you are driving south with a speed of 20 m/s. what is your displacement after 20s?

first we make a U turn and travel towards home in t = 20 s

so the distance of home from initial position is

Now after picking up the book we travel back with speed 20 m/s

so again after t = 20 s the displacement is given as

so the net displacement is given as

so it will be displaced by total displacement 200 m

false br