如图为两辆同向行驶的汽车发生“追尾”事故的现场.汽车B刹车后由于 ____ 仍撞到了汽车A;观察汽车A的尾部,说明力能够改变物体的 ____
--Where is my watch? I ________ find it.
--Don't worry. It must be somewhere in your room.
一根绳截去它的 25 ,还剩 25 米,原来这根绳子长( )