What is the acceleration of a freely falling object 5 seconds after it has been released from a height of 200 m?

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.

i think the answer is a, hope this is right, that would be my best guess.

gravitational energy

electrical energy

kinetic energy

ligh energy