Q2. Now the student replaces the backpack with a small suitcase of
mass 11.2 kg. The student applies a force of 15 N [45° above the
horizontal] and walks at a constant velocity to school, 1.4 km [E].
a) Draw an FBD for the suitcase.
b) Determine the work done by the student on the suitcase.
c) Determine the work done by friction on the suitcase.