22.) A rifle wiTh a weighT of 30 N fires a 5.0 g bulleT wiTh a speed of 300 m/s. Find The recoil speed of The rifle ( iT's speed ofTer firing). 33.) A railroad car of mass 2.00 x 10" kg moving aT 3.00 m/s collides and couples wiTh Two coupled railroad cars, each of The same mass as The single car and moving in The same direcTion aT 1.20 m/s. a) WhaT is The speed of The Three coupled cars afTer The collision? b) How much kineTic energy is losT in The collision? [hinT: AKE = KEf-KEi]