Question

A railroad freight car rolls on a track at 3.20 m/s toward two identical coupled freight cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. The first reaches the second two and all couple together. The mass of each is 2.95 ✕ 104 kg.

(a)

What is the speed (in m/s) of the three coupled cars after the first couples with the other two? (Round your answer to at least two decimal places.)

_________m/s

(b)

Find the (absolute value of the) amount of kinetic energy (in J) converted to other forms during the collision.

_________ J

Answer 1

Answer:

i don't know what to do with the question sorryyyyyyyyyyyyy is

Explanation:

i don't think I can draw