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March 6, 2015

Homework Help: Physics- check answer please

Posted by Liz on Wednesday, July 2, 2014 at 11:39am.

I am supposed to fill in the blanks without a word bank.

1. I you push a crate with 40 N of force at an angle of 30 degrees and your friend pushes with a force of 40 N horizontally, the amount of work you are doing is _____ the amount of work your friend is doing on the crate

my answer: equal to

2. Kinetic friction does ____ work on moving objects

my answer: negative

3. as you carry books across the room, the work done by gravity on the books is ____

my answer: 9.8 N/kg

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