Q1. While exploring a cave, a spelunker starts at the entrance and move the lowing distances. She goes 75.0m north, 250m east, 125m at an angle 30o north of east, and 150m south. Find her resultant displacement from the cave entrance.
Q2. Air traffic observes two aircrafts on his radar screen. The first is at an altitude 800m, horizontal distance 19.2km and 25o south of west. The second is at altitude 1100m, horizontal distance 17.6km and 20o south of west. What is the distance between the two aircrafts? (Place the x-axis west, the y-axis south, and the z-axis vertical)
Q3: A Rocket fires two engines simultaneously. One produces a thrust of 725N directly forward, while the other gives a 513N thrust at 32.4o above the forward direction. Find the magnitude and direction (relative to forward direction) of the resultant force that these engines exert on the rocket.