P3 - Work and Power

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When is work done?
When a force moves an object in the direction in which the force acts
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What is the formula for work done?
work done = force x distance moved (in the direction of the force)
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What is the weight the measurement of?
The gravitational attraction on a body acting towards the centre of the Earth
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What is the formula for weight?
weight = mass x gravitational field strength
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What is power?
the rate at which work is done
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What is the formula for power?
power = work done / time taken
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What are the rearrangements of this equation?
work done = power x time taken, time taken = work done / power
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Most powerful cars have ____ fuel consumption?
greater
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How does fuel pollute the environment?
car exhaust gases, especially carbon dioxide, are harmful. Carbon dioxide is a major source of greenhouse gases, which contribute to climate change
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How is power related to force and speed?
power = workdone/timetaken = forceXdistance/timetaken = forceXdistance/time = forceXspeed
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Other cards in this set

Card 2

Front

What is the formula for work done?

Back

work done = force x distance moved (in the direction of the force)

Card 3

Front

What is the weight the measurement of?

Back

Preview of the front of card 3

Card 4

Front

What is the formula for weight?

Back

Preview of the front of card 4

Card 5

Front

What is power?

Back

Preview of the front of card 5
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