. (III) An airplane whose air speed is 620 km/h is supposed to fly in a straight path 35.0° north of east. But a steady 95 km/h wind is blowing from the north. In what direc- tion should the plane head?

12-90. Show that the girl at A can throw the ball to the boy at B by launching it at equal angles measured up or down from a 45° inclination. If va = 10 m/s, determine the range R if this value is 15°, i.e., 6, = 45° – 15° = 30° and 02 = 45° + 15° = 60°. Assume the ball is caught at the same elevation from which it is thrown. VA = 10 m/s A B -R

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A sailor wants to navigate his boat such that it travels East. The boat has an engineand can travel at 8ms-' under normal conditions (no wind). A wind blows on a bearingof 150° with a magnitude of 6ms]a) What angle (as a bearing) should the sailor steer his ship to. b) What is the magnitude (speed) of the resultant velocity?