# P3 - The Energy of Games and Theme Rides

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What does any object held above ground?
Gravitational potential energy
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What is the formula of Gravitational Potential Energy?
GPE = mass x gravitational field strength x vertical height moved
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What is GPE measured in?
joules (J)
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What happens when skydivers reach terminal speed?
Their kinetic energy has a maximum value and remains constant. The GPE lost as they fall is used to do work against friction (air resistance)
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What can terminal speed being reached be shown as?
change in GPE = work done against friction
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What happens when a rollercoaster is released?
Converts GPE to kinetic energy as it falls
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What can this be shown by?
loss of GPE = gain in KE
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Why is each peak lower than the one before?
Some energy is transferred to heat and sound due to friction and air resistance
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What can this be shown by?
GPE at top= KE at bottom + energy transferred (to heat and sound) due to friction
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What happens to KE if speed doubles?
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What happens to KE if mass doubles?
It doubles
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## Other cards in this set

### Card 2

#### Front

What is the formula of Gravitational Potential Energy?

#### Back

GPE = mass x gravitational field strength x vertical height moved

### Card 3

#### Front

What is GPE measured in?

### Card 4

#### Front

What happens when skydivers reach terminal speed?

### Card 5

#### Front

What can terminal speed being reached be shown as?