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Energy 2

The document explains gravitational potential energy (GPE) as the energy an object possesses due to its height in a gravitational field, which increases when lifted and decreases when it falls. It also introduces kinetic energy (KE) as the energy an object has due to its speed, related to its mass and velocity. The gravitational field strength on Earth is noted to be approximately 10 N/kg.

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Kurt Haan
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40 views8 pages

Energy 2

The document explains gravitational potential energy (GPE) as the energy an object possesses due to its height in a gravitational field, which increases when lifted and decreases when it falls. It also introduces kinetic energy (KE) as the energy an object has due to its speed, related to its mass and velocity. The gravitational field strength on Earth is noted to be approximately 10 N/kg.

Uploaded by

Kurt Haan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Energy

Gravitational Potential
Energy:

The gravitational potential


energy (GPE) in Joule (J)
of an object is the energy
it has due to its height in
a gravitaional field:
Gravitational Potential
Energy:

If an object is lifted up it
will gain Gravitational
Potential Energy.

If it falls, it will lose


Gravitational Potential
Energy.
Gravitational Potential
Energy:

Formula:
Gravitational Potential
Energy:

The energy an object has


when it is lifted up.

The GPE of an object is


related to its mass (m),
height (h) and the
gravitational field
strength (g).
Gravitational Potential
Energy:

The gravitational field


strength (g) on the Earth
is approximately 10 N/kg
(You will always be told
this value in your
examination paper).
Kinetic Energy:

The kinetic energy (KE) in


Joule (J) of an object is
the energy it has as a
result of its speed.
Kinetic Energy:

The energy an object has


when it is moving.

It is related to the mass


(m) and speed (v) of the
object by the equation:
Kinetic Energy:

Worked Example:

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