Q1. A certain car is capable of accelerating at a rate of 0.52 m/s2. How long does it take for this car to go from a speed of 27 mi/h to the speed of 33mi/h?
Q2. A steel wire in a piano has a length of 0.9200 m and a mass of 5.300 10-3 kg. To what tension should this wire be stretched in order that the fundamental vibration correspond to middle C (fC = 261.6 Hz on the chromatic musical scale)?