An acorn falls, lands on a roof ands rolls down onto the ground. Which statement best describes the change in energy?
The acorn's kinetic energy is maximum when it lands on the roof.
The acorn's potential energy decreases and its kinetic energy increases.
The acorn's potential energy is at the highest just before it hits the ground.
The acorn does not have potential energy. It only has kinetic motion.
1 answer
The statement "The acorn's potential energy decreases and its kinetic energy increases" best describes the change in energy. As the acorn falls from the roof to the ground, its potential energy is gradually converted into kinetic energy. The acorn's potential energy is at its highest when it is on the roof and gradually decreases as it falls towards the ground, while its kinetic energy increases.