Which three characteristics of an object are represented by a motion map

I believe they are : velocity, length, time

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

the answer is 12 as i may remember

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