A truck of mass mT = 2000 kg is going north on Guadalupe with a speed of 4 m/s. The truck is struck by an eastbound car (mass of 1000 kg) traveling on 24th street. From the skidmarks after the collision, it is deduced that the mangled wreckage, which sticks to- gether after the collision was skidding at angle 20? with respect to the initial direction of the car. What was the initial speed of the car?