(really need will give branliest)
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.