Saturday
March 28, 2015

Homework Help: science

Posted by anonymous on Thursday, November 5, 2009 at 10:46am.

Arrange the following from the most work to the least. For each instance, calculate the total amount of work done. Show all calculations, including units of measure.

1. pushing a box of math books weighing 600 newtons a distance of 20 meters
-12000J

2. pulling a television weighing 400 newtons down a hallway of 35 meters
-14000J
3. pushing a stalled truck weighing 7,500 newtons a distance of 0.4 meters
-3000J
4. carrying several textbooks weighing 130 newtons, over the course of a semester, for 5,000 meters
-650000J
i am quite confused... would it be 4,2,1,3 or is that wrong and why? pleeaassee help!

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