物理SAT一道If value of an object is tripled,its kinetic energy is___ times its original value.value在这里指什么?

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物理SAT一道If value of an object is tripled,its kinetic energy is___ times its original value.value在这里指什么?
物理SAT一道
If value of an object is tripled,its kinetic energy is___ times its original value.
value在这里指什么?

物理SAT一道If value of an object is tripled,its kinetic energy is___ times its original value.value在这里指什么?
光看这个还真看不出来,要联系上下文,value并没有单独指质量或速度的意思.
这道题的问题是,如果一个物体的某个值变成了原来的三倍,那么它的动能是原来的几倍?
根据E=1/2*m*v^2
如果value是速度的话,答案是9
如果value是质量的话,答案是3

值,比如x的值

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