11 Changing the state of motion of an object 改变物体运动状态 What will the passengers feel if the car brakes suddenly during the driving process? 汽车在行驶过程中如果突然刹车，乘客会有什么感觉？ Changing the state of motion of an object 改变物体的运动状态 What happens to the passengers in the car when the motion of the car changes? 汽车的运动状态改变时，车上的乘客会怎么样？ What happens to the egg when you quickly pull out the piece of paper? 快速抽出纸片，鸡蛋会怎么样？ What happens to the other pieces when you hit one of the middle pieces with the ruler? 用尺子击打中间的一个棋子，其它棋子会怎么样？ What happens to the wooden block on the moving cart when it encounters an obstacle? 运动的小车遇到障碍物时，车上的木块会怎么样？ Use arrows on the diagram to mark the direction of motion of the block when the cart hits the obstacle. 在图上用箭头标出小车撞上障碍物时木块运动的方向。 An object has the property of maintaining its original state of motion (or rest), and this property is called inertia. 物体具有保持它原来运动（或静止）状态的属性，这种属性称为惯性。 All objects have inertia. 所有物体都具有惯性。 The application of inertia in life. 惯性在生活中的应用。 |
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