Q. A sound wave traveling at 340 m/s is emitted by the foghorn of a tugboat. An echo is heard 2.60 s later. How far away is the reflecting object? Answer in units of m.
Q. A car traveling at a speed of vo = 52 m/s stops smoothly (that is, its deceleration is constant) over a distance of d = 159 m. What is its acceleration during the time it is stopping?