Question

A tornado siren sounded from the center of town. The siren's sound wave traveled 910 meters at a constant velocity directly toward a school. It took the sound wave 2.6 seconds to travel that distance. What was the sound wave's velocity?

Answer 1

By definition, the speed of the sound wave is the distance it travels in 1s. Since in $t = 2.6s$ it travels $d = 910m$, the speed is:

$$v = \dfrac{d}{t}\\ v = \dfrac{910m}{2.6s} = 350m/s$$

Answer. 350 m/s.