Suppose a skydiver (mass =100kg) is falling towards the earth. when the skydiver is 80 m above the earth he is moving at 60 m/s at this point calculate the skydivers kinetic energy

i dont think you are wrong for wanting to get even with someone who did you wrong.

(i'm an eye for an eye kind of person) but if this person hurt you in a sexual way, i dont suggest doing anything to him. he should be taken to the proper authorities, you could go to jail depending on what you do. if it was something small like your sibling took your spot on the couch, than yea, i would get even with him by taking one of his favorite snacks lol. but i dont suggest you doing anything illegal.

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

we need to know the time interval during which the force acts. impulse of force = momentum change