What is the change in potential energy of an energetic 72 kg hiker who makes it from the floor of death valley to the top of mt. whitney?

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

What’s #16 asking and how do i solve it?

Place me with this question is my last question