作业帮和动能和功有关的一道物理题
来源：学生作业帮 编辑：拍题作业网作业帮 分类：英语作业 时间：2024/04/28 20:26:47
和动能和功有关的一道物理题
虽然是英文的,但是题不是很难,答案要理由.
You slam on the brakes of your car in a panic,and skid a certain distance on a straight,level road.If you had been traveling twice as fast,what distance would the car have skidded,under the same conditions?
A.It would have skidded 4 times farther.
B.It would have skidded twice as far.
C.It would have skidded 1.4 times farther.
D.It is impossible to tell from the information given.
正确的是D,但我不知道为什么
虽然是英文的,但是题不是很难,答案要理由.
You slam on the brakes of your car in a panic,and skid a certain distance on a straight,level road.If you had been traveling twice as fast,what distance would the car have skidded,under the same conditions?
A.It would have skidded 4 times farther.
B.It would have skidded twice as far.
C.It would have skidded 1.4 times farther.
D.It is impossible to tell from the information given.
正确的是D,但我不知道为什么
要不然是什么?
这和初速度、动摩擦因数有关,题目里都没有给出啊
这和初速度、动摩擦因数有关,题目里都没有给出啊