posted by ntirandekura .
Three carts of masses 5 kg, 12 kg, and 3 kg
move on a frictionless horizontal track with
speeds of 5 m/s, 8 m/s, and 4 m/s, as shown in
ﬁgure. The carts stick together after colliding.
5 kg 12 kg 3 kg
5 m/s 8 m/s 4 m/s
Find the ﬁnal velocity of the three carts.
Answer in units of m/s