“追及”、“相碰”是运动学中研究同一直线上两个物体的运动时常涉及的两类问题,也是匀变速直线运动规律在实际问题中的具体应用,笔者以“追及”问题的不同求法开发了学生的创造思维。例题:汽车和摩托同时同地同向沿同一笔直的公路运动,汽车以10m/s的速度做匀 “Chasing ”, “colliding ” are two kinds of problems which are often involved in the kinematics study of the movement of two objects on the same straight line. They are also the concrete application of the law of uniform linear motion in practical problems. Pursue the different requirements of the “problem” developed the students’ creative thinking. Example: cars and motorcycles at the same time with the same direction along the same straight road exercise, the car to do 10m / s speed uniform