Suppose an automobile has 2100 J of kinetic energy. When it moves at three times the speed what will be its ki?
Reaga asked:
Suppose an automobile has 2100 J of kinetic energy. When it moves at three times the speed what will be its kinetic energy?
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Suppose an automobile has 2100 J of kinetic energy. When it moves at three times the speed what will be its kinetic energy?
March 25th, 2010 at 10:54 am
It would be 9x more, so 18,900J.
Because Ek=1/2mv^2, so if velocity was 1 at first, then 3 after, it’d be a difference of 3^2=9. be the change.*