A ball is dropped from rest near Earth. Neglect air resistance. Justify your answer. a) About how far will the ball fall in 3 s?
b) The same ball is dropped from rest by an astronaut on the moon, where the free fall acceleration is one-sixth that on the Earth. In 3 seconds, how far does the ball fall in?

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.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

the rearrangement of particles in a physical change. hope this