As shown below, a 850 kg car traveling east collides with a 1780 kg pickup truck that is traveling north. The two vehicles stick together as a result of the collision. After the collision, the wreckage is sliding at vf = 14 m/s in the direction ? = 21° east of north. Calculate the speed of each vehicle before the collision. The collision occurs during a heavy rainstorm so you can ignore friction forces between the vehicles and the wet road. Express your answers using apropriate mks units.     A.) vcar,i =  B.) vtruck,i =  C.) Determine what fraction of the total initial KE is turned into thermal energy as a result of the collision. ΔTE KEtotal,i =

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