Two carts with masses of 4.82 kg and 2.72 kg move toward each other on a frictionless track with speeds of 5.03 m/s and 3.52 m/s respectively. The carts stick together after colliding head-on. Find the final speed.

Answer 1

m1*V1-m2*V2 = 4.82*5.03-2.72*3.52=14.7

m*V = 14.7
V = 14.7/m = 14.7/(4.82+2.72) = 1.95 m/s