**Background Question 2**: Draw the free-body diagram(s) corresponding to the given situation, using the picture below as a starting point. Assume that the coefficient of kinetic friction of the air track is µ. Be sure to include the forces acting on both objects in your diagram. Use the free-body diagram you drew to calculate the acceleration experienced by the air cart **in terms of ****µ**, **m1, m2, and g **(your equation may or may not include all of these variables). Be extra careful: The cart and mass *are in motion*! Include your free-body diagram(s) and calculation in your slide for Background question 2.

**Background Question 3:** Draw the free-body diagram(s) corresponding to the given situation, once again using the picture above as a starting point. Be sure to include the forces acting on both objects in your diagram. Use the free-body diagram you drew to calculate the acceleration experienced by the air cart **in terms of m1, m2, and g **(your equation may or may not include all of these variables). Be extra careful: The cart and mass *are in motion*! Include your free-body diagram(s) and calculation in your slide for Background question 3.