A 2.0-kilogram object moving with a velocity of 5.0 m/s in thepositive x direction strikes and sticks to a 3.0-kilogram objectmoving with a speed of 2.0 m/s in the same direction. How much kinetic energy is lost in this collision?
2.4 Joules
9.6 Joules
5.4 Joules
0.6 Joules