(7%) Problem 7: A delivery man starts at the post office, drives 40.0 km north, then 1/ km west, then 61 km northeast, and finally 2/ km north to stop for lunch. (The direction "northeast" is 45 degrees east of north.) ted ted eted 50% Part (a) What is the magnitude of his net displacement vector, in units of km? eted Grade Summary d = 45.181 Deductions 1056 leted Potential 100% leted sin COSO tan() 7 8 9 HOME Submissions Attempts remaining: 11 cotan asin() acoso 4 5 6 Of per attempt) atan acotan() sinh 2 3 detailed view cosh( tanh() cotanh() + U END O Degrees O Radians VO BACKSPACE DEL CLEAR AWN OS Submit Hint Feedback I give up! Hints: 1 for a 0% deduction. Hints remaining: 0 Feedback: 09% deduction per feedback. Take north to be the positive y direction and east to be the positive x direction. Find the components of the northeast displacement, then the components of the sum. Using the components, sketch the net displacement vector in a coordinate system, with the tail of the vector at the origin, Use the Pythagorean theorem to relate the magnitude to the components. * 50% Part (b) What is the direction of his net displacement? Express your answer an angle measured in degrees east of north, 0 = 130 X Attempts Remain