an object is released from rest high above the surface of the earth. when it has fallen halfway to the surface, its kinetic energy is . after it has fallen twice as far, just before it hits the surface of the earth, its kinetic energy is .

Your question is incomplete. I would give you a general overview that should help you get the answer.

In order to come to a logical conclusion based on the description of something, it is important to:

Take note of the central idea Take note of the claims made and supporting details as they validate the claim. Make use of inference/deductions in a logical manner Therefore, as you are asked to make two conclusions based on the details given about the swing, then follow the details given above.