1. Particle motion under gravity, speed calculation at a specific height, and time until it strikes the ground. 2. Collision of two particles with different masses, calculation of speed after collision and impulse exerted. 3. Equilibrium problem with forces acting on a parcel on a rough surface, solving for the smallest force to maintain equilibrium. 4. Non-uniform rod (girder) tilting about a point, calculation of the center of mass based on force application. 5. Vector addition of forces, magnitude, and direction of the resultant force. 6. Roller skating motion with constant velocities, position vectors, time of intersection, and distance calculation between two skaters.