In Prob. 2/200 if aircraft A is accelerating in its northward direction at the rate of 3...

In Prob. 2/200 if aircraft A is accelerating in its northward direction at the rate of 3 km/h each second while aircraft B is slowing down at the rate of 4 km/h each second in its southwesterly direction, determine the acceleration in m/s² which B appears to have to an observer in A and specify its direction (β) measured clockwise from the north.