A jet airliner moving initially at 3.35  102 mi/h due east enters a region where the wind is blowing at 1.00  102 mi/h in a direction 35.5° north of east. (Let the x-direction be eastward and the y-direction be northward.) (a) Find the components of the velocity of the jet airliner relative to the air, JA. vJA,x =  mi/h vJA,y =  mi/h (b) Find the components of the velocity of the air relative to Earth, AE. vAE,x =  mi/h vAE,y =  mi/h (c) Write an equation analogous to  vAB = vAE − vBE  for the velocities  vJA,   vAE,  and  vJE . (In the given equation,  vBE  is the velocity of observer B relative to observer E. Object A travels with velocity  vAB  relative to observer B, and velocity  vAE  relative to observer E.) vJA = vJA = vAE + 2vJE vJA = vAE − vJE       vJA = vJE − vAE vJA = vJE + vAE (d) What are the speed and direction of the aircraft relative to the ground? magnitude      mi/h direction      ° north of east

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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.