Hi Sierra;
Force=45N, 35degrees above horizontal
Distance=9m
Work=(force)(distance)
The issue created by the degrees above horizontal is that a triangle is created. We need to understand the horizontal force of this triangle.
The hypotenuse is = 250N
We need the value of the adjacent...
adjacent/hypotenuse
Therefore, we need the value of the cos of 35degrees.
45N (cos 35degrees)=45N(0.82)=36.9N
Work=(36.9N)(9m)=332 joules
10/20/2013

Vivian L.