John walks 2.00 km north, then turns right and walks 1.40 km east. His speed is 1.40 m/s during the entire stroll. Part A What is the magnitude of his displacement, from beginning to end

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.