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Conceptual 6-2 (B)

Last updated over 2 years ago

10 questions

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Question 1

1.

Power and Work are measured in the same units

True

False

A fireman (80 kg) climbs a 10m high ladder in 4 seconds to rescue a kitten from a tree. 

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Question 2

2.

What is the fireman's GPE before climbing the ladder?

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Question 3

3.

What is the fireman's GPE at the top of the ladder?

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You have a load of 10 kg of groceries that you need to carry up a flights of stairs (6 m tall).

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Question 4

4.

How much work does the fireman do?

Question 5

5.

How much power does the fireman exert?

Question 6

6.

Calculate the gravitational potential energy of the groceries when they are sitting at the top of the stairs.

Question 7

7.

How much work was done to bring them up the stairs?

Question 8

8.

If you walk them up the stairs in 4 seconds, how much power is required?

Question 9

9.

What if you run them up the stairs in 1.2 seconds? How much power would that require?

Question 10

10.

Doing the same amount of work in a longer time leads to more power

True

False