Two cars collide at an intersection.Car A, with a mass of 2000 kg, is going from west to east, while car B, of mass 1500 kg, is going from north to south at 15 m/s .As a result of this collision, the two cars become enmeshed and move as one afterward. after the collision, the enmeshed cars moved at an angle of 65° south of east from the point of impact.

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Jawapan

2016-07-05T14:54:52+08:00
B) 90°-65°=25° 

25° = arctan (14*1500/v2000) 

210/20v =tan 25° = .466 

2v * .466 =21 

v=21/.933 = 22.5 m/s 

A) v = sqrt(14² + 22.5²) = 26.5 m/s