
Work, Power, and Efficiency
Authored by Cammie Plymell
Other
6th - 9th Grade
Used 47+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You are pushing a car as hard as you can for 5 minutes, but cannot get it to move. How much work have you done on the car?
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Find the work of a turtle that has a force of 27 newtons and travels a distance of 3 meters.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A bird used 8 watts of power and flew for 5 seconds. How much work did the bird do?
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How much power is needed to do 648 Joules of work in 100 seconds?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How long does it take to do 432 joules of work with 75 watts of power?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
measures the ratio of work output to work input
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J or work are done by the machine?
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