1. The problem statement, all variables and given/known data A jet is flying horizontally [drawing shows an observer on the ground, a plane overhead at point B, and an outline of the plane from it's observed position to the left at point A. The angle between the observer and point A is 36°.] When the plane is directly overhead at B, a person on the ground hears the sound coming from A in the drawing. The average temperature of the air is 20 degrees Celsius. If the speed of the plane at A is 166 m/s, what is its speed at B, assuming that it has a constant acceleration? 2. Relevant equations ??? No Clue 3. The attempt at a solution I am not sure which equation(s) to use. I know that the temperature is not relevant to the equation, that it gives the velocity of sound at 343 m/s. Other than that, I am at a total loss for where to start on this. Please help!