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06.03 Power Math Wkst
By Christina Shepherd
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Last updated over 5 years ago
28 questions
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Question 1
1.
I have reviewed the Power equation and know how to use the triangle trick for solving the problems.
yes
no
Question 2
2.
I know that the unit for Power is Watts (W).
yes
no
Question 3
3.
I know that the unit for Work is Joules (J).
yes
no
Question 4
4.
I know that the unit for Time is seconds (s).
yes
no
Question 5
5.
Known 1:
Question 6
6.
Known 2:
Question 7
7.
Show your work for solving the problem... You do 900 J of work in pushing a sofa. If it took 5 s to move the sofa, what was your power in watts?
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Question 8
8.
What is the value for the unknown that you solved for in question 7? Label your answer!
Question 9
9.
Known 1:
Question 10
10.
Known 2:
Question 11
11.
Show your work for solving the problem... If a runner’s power is 130 W, how much work is done by the runner in 600 s?
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Question 12
12.
What is the value for the unknown that you solved for in question 11? Label your answer!
Question 13
13.
Known 1:
Question 14
14.
Known 2:
Question 15
15.
Show your work for solving the problem... The power produced by an electric motor is 500 W. How long will it take the motor to do 10,000 J of work?
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Question 16
16.
What is the value for the unknown that you solved for in question 15? Label your answer!
Question 17
17.
Known 1:
Question 18
18.
Known 2:
Question 19
19.
Show your work for solving the problem... To lift a baby from a crib, 50 J of work is done. How much power is needed if the baby is lifted in 0.5 s?
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Question 20
20.
What is the value for the unknown that you solved for in question 19? Label your answer!
Question 21
21.
Known 1:
Question 22
22.
Known 2:
Question 23
23.
Show your work for solving the problem... A color TV uses 120 W of power. How much energy does the TV use in 3,600 s?
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Question 24
24.
What is the value for the unknown that you solved for in question 23? Label your answer!
Question 25
25.
Known 1:
Question 26
26.
Known 2:
Question 27
27.
Show your work for solving the problem... A car’s engine produces 1,000,000 watts of power. How much work does the engine do in 30 s?
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Question 28
28.
What is the value for the unknown that you solved for in question 27? Label your answer!
