1. a 1.4 x 10³ kg car is westbound at a velocity of 37.0 km/h when it collides with a 2.0 x 10³ kg truck…

1. a 1.4 x 10³ kg car is westbound at a velocity of 37.0 km/h when it collides with a 2.0 x 10³ kg truck northbound at a velocity of 35 km/h. if these two vehicles lock together upon collision, what is the initial velocity of the vehicles after collision? (7.2 m/s 37° w of n)