Question

Which energy change best relates to a boulder that is rolling down the side of a hill?
potential energy transforming into kinetic energy
mechanical energy transforming into thermal energy
potential energy transforming into electromagnetic energy
mechanical energy transforming into electromagnetic energy

Answer 1

The energy change that best relates to a boulder rolling down the side of a hill is **potential energy transforming into kinetic energy**. As the boulder descends, its gravitational potential energy decreases, while its kinetic energy, which is the energy of motion, increases.