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.
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do you know what kinetic and potential energy are?
OK, so which of these seems like it's building up kinetic energy and then stopping, converting it into potential energy?
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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.
so number 2
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
so the number 3
sorry, lagged there
wait no, that's potential to kinetic
kinetic energy formula?
what is gravitational potential energy formula
as ball rolls up its height above the ground is increasing
its velocity is decreasing as gravity is slowing it down
so KE decreases and PE increases
as KE is a function of velocity and PE is a function of height
Energy that is emitted or propagated as electromagnetic waves is called _______ energy.
light is what kind of a wave
=.= u are going to have to answer me, or say i dont know or something
i dont know
okay light is an electromagnetic wave
light occurs due to photons, and photons occur due to electrons relaxing from higher energy states