I have a test tomorrow and i lost all my papers on how to do this stuff. And i have this paper that has examples of all the problems i need to know how to do.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

1. A humming bird has a mass of 1.70 g. if the hummingbird ascends straight up with a net acceleration of 1.20 m/s^2, how much work does it do over a distance of 8 m.

2. The longest shish kabob ever made was 881 m long. Suppose the meat and vegetables need to be delivered in a cart from one end of this shish kebab to the other end. A cook pushes the cart by applying a force of 40.0 N at an angle that is 45ยบ above the horizontal. If the force of friction acting on the cart is 28 N what is the net work done on the cart and its contents during the delivery.

2. Relevant equations

W=DF

3. The attempt at a solution

1. (.0017kg) / (1.2 m/s^2) = .0014 N

.0014 x 8m = .0113 J

What am i doing wrong?

2. I have know idea how to do this one.

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# Homework Help: Test Tomorow on work, and more

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