Work & Power Flashcard
Flashcard
•
Science
•
10th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the equation for calculating power?
Back
Power = Work / Time
2.
FLASHCARD QUESTION
Front
A girl weighs 400 N. She runs up a flight of stairs of height 5 m in 4 seconds. What is her power?
Back
500 W
3.
FLASHCARD QUESTION
Front
Which of these is a measurement of power? 100 joules, 100 watts, 100 meters per second, 100 hertz?
Back
100 watts
4.
FLASHCARD QUESTION
Front
True or false: when the distance an object moves is zero the work done on the object is also zero.
Back
True
5.
FLASHCARD QUESTION
Front
A kid throws a ball with a force of 70N over 1.1 meters. How much work did he do?
Back
77 joules
6.
FLASHCARD QUESTION
Front
Define work in physics.
Back
Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance.
7.
FLASHCARD QUESTION
Front
What is the unit of work?
Back
The unit of work is the joule (J).
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