The answer is Everything EXCEPT Linkedln.
As an object in motion speeds up or "becomes heavier", its kinetic energy increases proportionally: double the velocity and you quadruple the kinetic energy. This is why a tiny bullet traveling at high speed does so much more damage than a huge truck bumping into something at 1 mph.
Answer: Choice C
Do you have the answer choices? I would think it would be for safety and making sure the work is correct...