3dsmax

**1. Homework Statement**

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 45º 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. Homework 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.