1. A worker pushes a large rock to the north while another worker helps by pushing it to the east. If they both exert equal force, in what direction does the rock move?
A. north
B. northeast
C. southwest
D. east
2. At take off, a plane flies 100 km north before turning to fly 200 km east. How far is its destination from where the plane took off?
A. 200 km
B. 224 km
C. 300 km
D. 173 km
3. A runner traveled 15 kilometers north then backtracked 11 kilometers south before stopping. His resultant displacement was
A. 26 km south
B. 4 kilometers south
C. 26 km north
D. 4 kilometers north