You are traveling on an airplane. The velocity of the plane with respect to the air is 170 m/s due east. The velocity of the air with respect to the ground is 43 m/s at an angle of 30° west of due north. 1) What is the speed of the plane with respect to the ground? 153.1 m/s Submit 2) What is the heading of the plane with respect to the ground? (Let 0° represent due north, 90° represents due east). East of due North Submit 3) How far east will the plane travel in 1 hour? 534600 m Submit

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Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.