[熱身賽第一輪] 二維向量與運動 [Warm-up Round 1] Vectors and Motion in Two Dimensions

unit: Kinematics topic: Vectors and Motion in Two Dimensions learning objective: Describe the motion of an object moving in two dimensions. essential knowledge: Motion in two dimensions can be analyzed by separating it into perpendicular components and applying one‑dimensional kinematic relationships to each. Projectile motion is a special case in which one component has zero acceleration and the other has constant nonzero acceleration.