Conceptual 6-2 (B)
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Last updated over 2 years ago
10 questions
Required
1
Power and Work are measured in the same units
Power and Work are measured in the same units
A fireman (80 kg) climbs a 10m high ladder in 4 seconds to rescue a kitten from a tree.
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1
What is the fireman's GPE before climbing the ladder?
What is the fireman's GPE before climbing the ladder?
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1
What is the fireman's GPE at the top of the ladder?
What is the fireman's GPE at the top of the ladder?
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1
How much work does the fireman do?
How much work does the fireman do?
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1
How much power does the fireman exert?
How much power does the fireman exert?
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1
Calculate the gravitational potential energy of the groceries when they are sitting at the top of the stairs.
Calculate the gravitational potential energy of the groceries when they are sitting at the top of the stairs.
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1
How much work was done to bring them up the stairs?
How much work was done to bring them up the stairs?
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1
If you walk them up the stairs in 4 seconds, how much power is required?
If you walk them up the stairs in 4 seconds, how much power is required?
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1
What if you run them up the stairs in 1.2 seconds? How much power would that require?
What if you run them up the stairs in 1.2 seconds? How much power would that require?
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1
Doing the same amount of work in a longer time leads to more power
Doing the same amount of work in a longer time leads to more power