Question

(5 pts) 1. Vector A is in the 2nd quadrant at an angle of 0 = 36.9° counterclockwise from the +y axis. The magnitude of A is 5.00 m. What is the x component of A ? (a) -3.00 m (b) +3.00 m (c) -4.00 m (d) +4.00 m (e) -0.72 m (f) none of the above answers (5 pts) 2. Vector A has magnitude 6.00 km and direction due east. Vector B has magnitude 5.00 km and direction 30.0° west of south. What is the direction of the vector C that is the vector sum of A and B? I E (a) 51.1° south of east (b) 38.9° south of east (c) 37.0° south of west (d) 63.0° south of west (e) none of the above answers 30° (5 pts) 3. You are in an open and level field. You start at a tree and then walk 30.0 m due east and then 40.0 m due south. What is then the shortest distance you can walk and return to the tree? (a) 70.0 m (b) 10.0 m (c) 26.5 m (d) 50.0 m (e) none of the above answers

Answer 1

Ax = -5Sin 36.9. Ha = 3 Aa= 3 option option A A+ B = 8 ĵ km À =67 B = Es sinzo i-scopaoJ) Ĉ= Ã+B= 3.si - 4.33 kl= 3.5 4 4.332 Octan ( 4.33 ) = 51.1 oph m-) 30 optime Sor