题目
题目

SPHY001 Graded Quiz 4 (Unit 7 and Unit 8)- Requires Respondus LockDown Browser

单项选择题

A child pulls on a wagon with a force of 10 N. If the wagon moves a total of 50 m in 5 s, what is the average power generated by the child, in watts?  

选项
A.10 W
B.50 W
C.1 W
D.100 W
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标准答案
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思路分析
We are given a force and a displacement to determine average power, which is defined as work done divided by time. First, calculate the work done by the child: Work = force × distance = ......Login to view full explanation

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How many, if any, factors are necessary to determine power?  1.) Force exerted.  2.) Distance the force moves.  3.)  Time required to do the work.

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Work and power help us understand how force is applied across distance and how quickly that work is done over time (T or F)

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