Question

Read the following list of objects:

the water behind a dam, a fully wound watch spring, a swing moving back and forth, an object moving on Earth's surface, a roller coaster cart when it hits the lowest point of the track

Which statement is correct?

A swing moving back and forth and the water behind a dam have only kinetic energy.
A fully wound watch spring and a swing moving back and forth have only potential energy.
The water behind a dam and a roller coaster cart when it hits the lowest point of the track have only potential energy.
An object moving on Earth's surface and a roller coaster cart when it hits the lowest point of the track have only kinetic energy.

Answer 1

i think its either A or D because im pretty sure it has something to do with kinetic energy

Answer 2

Kinetic energy is a form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
https://www.britannica.com/science/kinetic-energy#:~:text=Kinetic%20energy%20is%20a%20form,and%20thereby%20gains%20kinetic%20energy.

Answer 3

Thanks<3

Answer 4

No Problemo