Let $\vec u = (-2,0,0)$, $\vec v=(3,4,0)$, and $\vec w=(2,4,-1)$.

  1. Given the vectors on the board, draw and label $\text{proj}_{\vec d}\vec F$, $\text{proj}_{\vec F}\vec d$, $\vec F+\vec d$, and $\vec F-\vec d$.
  2. Compute the work done by $\vec w$ to move an object through the displacement $\vec v$.
  3. Compute the cross product $\vec v\times \vec w$.
  4. Compute the cross product $\vec w\times \vec v$.
  5. Compute the area of the parallelogram whose edges are parallel to $\vec v$ and $\vec w$.
  6. Place each of the vectors in 3D with the base at the origin, and then find the the area of the triangle that whose vertices are the heads of $\vec u$, $\vec v$, and $\vec w$.
  7. Give an equation of the plane that passes through the 3 points from the previous problem
  8. Give an equation of a plane that passes through the 3 points $(2,0,0)$, $(0,3,0)$, $(0,0,5)$

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