On notebook paper or engineering paper, answer the following questions, by hand and using pencil: 1. (10 pts) Define erratic motion, as discussed in lecture and textbook. 2. (30 pts) Express the following time derivatives using "dot" notation: (a) dx/dt, (b) dy/dt, (c) dv/dt, (d) ds/dt, (e) dr/dt, (f) d0/dt. 3. (20 pts) For curvilinear motion using rectangular components, state the vector formula for velocity in terms of V, V,, and v. 4. (20 pts) For curvilinear motion using normal and tangential components, state (a) the formula for a, and (b) the formula for a,. 5. (20 pt) For curvilinear motion using cylindrical components, state. (a) the formula for a, and (b) the formula for ag.