# Physics Revision

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What happens when a force moves an object?
Energy is transferred and work is done.
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How do you calculate work done?
Work Done=Force applied (N) * Distance moved in the direction of the force (m)
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What happens when an object is lifted up?
Work is done against the force of gravity; its weight.
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How do you calculate the change in gravitational potential energy?
Change (J)=Weight (N) * Change in vertical height (m)
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What is gravitational potential energy?
The energy stored in an object because of the height it has been lifted to, against the force of gravity.
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What is elastic potential energy?
The energy stored in an elastic object when work has been done on the object to change its shape (e.g. catapult)
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When a car brakes; what is kinetic energy transformed into?
Heat in brakes and tyres
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In a wind turbine; what is kinetic energy transformed into?
Electricity; heat and sound
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What a roller-coaster car goes up a ramp; what is kinetic energy transformed into?
Gravitational potential energy and heat
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When a bullet is fired into wood: what is kinetic energy transformed into?
Heat
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When a space shuttle re-enters the atmosphere; what is kinetic energy transformed into?
Heat
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When does an object have more kinetic energy?
If it has a bigger mass or if it travels at a higher speed
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What is the formula for kinetic energy?
Kinetic energy=
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## Other cards in this set

### Card 2

#### Front

How do you calculate work done?

#### Back

Work Done=Force applied (N) * Distance moved in the direction of the force (m)

### Card 3

#### Front

What happens when an object is lifted up?

#### Back ### Card 4

#### Front

How do you calculate the change in gravitational potential energy?

#### Back ### Card 5

#### Front

What is gravitational potential energy?

#### Back 