PLZ HELP Explain how kinetic energy and potential energy change as a rollercoaster moves up and down hills on its track.

Explanation:

Before the roller coaster starts moving, it is at rest and energy at rest is potential energy. As the roller coaster moves the potential energy is converted to kinetic energy as kinetic energy is energy in motion. As it gets to the top of a hill it assumes a rest position from a height for a short time and as it comes down the potential energy is converted again to kinetic energy. This continues for the whole ride until it comes to an end.

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

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the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever