Potential Energy:
• Energy is measured when it is
transferred from one form to another
or from one object to another.
• Energy = capacity to do work.
• Work = amount of energy transferred.
• Energy and work = scalars.
• Measured in J.
• Stored energy = potential energy.
• Movement energy = kinetic energy.
Kinetic Energy:
Sample
Gravitational Fields:
• All masses attract each other - all masses have a
U1:
Energy (A)
• Kinetic energy (Ek) = energy of an object
when it moves.
1
• Ek = 2 mv2.
• If a car doubles its speed, its kinetic energy
is 4 times larger – requires 4 times the
Summaries after sample
gravitational field.
braking distance to stop.
• Greatest gravitational force = 2 large objects
• High speed = high kinetic energy.
close together.
• Weight on Earth = gravitational force pulling Gravitational
downwards towards the Earth's centre.
Potential Energy:
• Greater mass = greater weight.
• Earth’s gravitational field strength (g) = 9,8 N.kg-1. • Gravitational potential energy = stored
• W = mg. energy of an object due to its position in
• Gravitational acceleration (g) on Earth = 9,8 m.s-2. Earth's gravitational field relative to
reference point.
• Gravitational potential energy (Ep) is
transferred to an object when it is lifted
above the reference point against the
vertical force of gravity.
• Ep is transferred from an object when it
is moved below the reference point.
• Ep = mgh.
GR10 PS T4-T1 Mind Map Via Afrika Copyright © www.summariessa.co.za (DO NOT COPY)
, Sample
Summaries after sample
• Energy is measured when it is
transferred from one form to another
or from one object to another.
• Energy = capacity to do work.
• Work = amount of energy transferred.
• Energy and work = scalars.
• Measured in J.
• Stored energy = potential energy.
• Movement energy = kinetic energy.
Kinetic Energy:
Sample
Gravitational Fields:
• All masses attract each other - all masses have a
U1:
Energy (A)
• Kinetic energy (Ek) = energy of an object
when it moves.
1
• Ek = 2 mv2.
• If a car doubles its speed, its kinetic energy
is 4 times larger – requires 4 times the
Summaries after sample
gravitational field.
braking distance to stop.
• Greatest gravitational force = 2 large objects
• High speed = high kinetic energy.
close together.
• Weight on Earth = gravitational force pulling Gravitational
downwards towards the Earth's centre.
Potential Energy:
• Greater mass = greater weight.
• Earth’s gravitational field strength (g) = 9,8 N.kg-1. • Gravitational potential energy = stored
• W = mg. energy of an object due to its position in
• Gravitational acceleration (g) on Earth = 9,8 m.s-2. Earth's gravitational field relative to
reference point.
• Gravitational potential energy (Ep) is
transferred to an object when it is lifted
above the reference point against the
vertical force of gravity.
• Ep is transferred from an object when it
is moved below the reference point.
• Ep = mgh.
GR10 PS T4-T1 Mind Map Via Afrika Copyright © www.summariessa.co.za (DO NOT COPY)
, Sample
Summaries after sample
