A plane takes off from a runway traveling due east with a velocity of 224 km/hour at an angle of 12.1 degrees above the horizontal.  It travels at constant velocity for 15 minutes at which time it levels off and travels at a cruising speed of 313.4 km/hour for one hour at angle of 17.2 degrees South of East.  It then descends towards another runway for 15 minutes, also running eastward making an angle 5.7 with respect to the ground at 202.6 km/hour.  What is the magnitude of the plane's average acceleration (in m/s²) for the entire time it is in the air?

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Initial velocity vi 224kmh 622ms Duration 15min 900s Intermediate veloc... View the full answer