The kinetic energy of an object depends on both the objects mass and velocity. a. true b. false

A

Explanation:

According to the formula 1/2MV²..

therefore it depends both on mass and velocity

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.