Final answer:
Chris, who is standing 10 meters above the ground, has more potential energy than Rick because potential energy increases with height.
Step-by-step explanation:
The question about which of the twins, Rick or Chris, who are painting a house and standing on scaffolding at different heights, has more potential energy can be answered by understanding the concept of gravitational potential energy. Potential energy in this context is determined by the mass of the object, the height of the object above a reference point, and the strength of gravity. Since Chris is standing 5 meters above Rick, who is already 5 meters above the ground, Chris has a greater height above the reference point (the ground) and therefore has more potential energy.