2. A clock has a 10 cm second hand. From the 12 _P_M mark to the 9 PM mark, for the tie of the second hand, calculate the: (15 pts) a. Displacement vector in unit-vector notation. b. Average velocity vector in unit-vector notation. 0. Average acceleration vector in unit-vector notation. d. Calculate the magnitude and direction of the instantaneous acceleration L at the 3 PM mark. Use a coordinate system with the origin at center of the clock with the +x axis along the 3 PM mark and the +y axis along the 12 PM mark. Express your answers in units of cm, sec. |