1. A meter stick is rotated about the end labelled 0.00 cm, therefore that the other end of the stick moves during an arc length of 8.66cm. Through what arc length s does the 25.0-cm mark on the stick move?
2. The radius of the circle traced out by the second hand on a clock is 6.00 cm. In a time t the tip of the second hand moves during an arc length of 18.8 cm. Decide the value of t in seconds.