A car travels east with a horizontal speed of 51.1km/h. Rain is falling vertically with respect to Earth. The traces of the rain on the side windows of the car make an angle of 61.2 degrees with the vertical. Find the magnitude of the velocity of the rain with respect to the car. Find the magnitude of the velocity of the rain with respect to Earth. How can the magnitudes be different? I don't even know how to illustrate this.