Power, Efficiency, and Work Concepts
Interactive Video
•
Emma Peterson
•
Physics, Science
•
9th - 12th Grade
•
Hard
25:21
10 questions
Show answers
1.
Multiple Choice
What is the unit of power named after James Watt?
Newton
Joule
Watt
Pascal
2.
Multiple Choice
If an apple is lifted with a force of 1 Newton through 1 meter, how much energy is used?
1 Joule
100 Joules
0.1 Joules
10 Joules
3.
Multiple Choice
How many times would you need to lift an apple per second to match the power of a 100-watt light bulb?
10 times
200 times
50 times
100 times
4.
Multiple Choice
What is the power output of a monkey doing push-ups if it lifts its center of mass by 0.3 meters in 2.4 seconds?
200 watts
20 watts
50 watts
100 watts
5.
Multiple Choice
What is the relationship between power, force, and speed for an object moving at constant velocity?
Power = Force / Speed
Power = Force x Speed
Power = Force + Speed
Power = Speed / Force
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