Question

Which of the following situations describes an object's kinetic energy being converted into gravitational potential energy?

A penny sits motionless atop a shelf.

A water particle flows down a mountain stream.

A kiwi is dropped from a second-story window.

A ball rolls up an inclined ramp.

Answer 1

do you know what kinetic and potential energy are?

Answer 2

yes

Answer 3

OK, so which of these seems like it's building up kinetic energy and then stopping, converting it into potential energy?

Answer 4

For example:

A weight is raised up from the ground and then stops to be dropped afterwards. Raising it up builds kinetic energy, when it stops it is potential energy that can be converted again into kinetic IF it drops. But while motionless, it's potential energy.

Answer 5

so number 2

Answer 6

no, flowing down a stream is just kinetic all the time

we're talking about building up energy and then suddenly halting, even if the options dont mention stopping its obvious that it will

Answer 7

so the number 3

Answer 8

sorry, lagged there

Answer 9

wait no, that's potential to kinetic