On the planet gizmo, the inhabitants travel by high speed trains that run on air tracks much like the air track you used in lab. a train car with a mass of 8700 kg is traveling at 11.0 m/s when it strikes a second car moving in the same direction at 2.2 m/s. the two stick together and move off with a speed of 4.00 m/s. what is the mass of the second car?

Explanation:

It is given that,

Mass of the train car,

Initial speed of the train car,

Initial speed of the second car,

After the collision, both cars stick together and move off with a speed of 4.00 m/s, V = 4 m/s

Let is the mass of the second car. It can be calculated using the conservation of momentum. In case of inelastic collision, after collision both objects move with a common speed.

So, the mass of the second car is 33833.33 kg. Hence, this is the required solution.

i don’t know what the answer is i wish i

1/0.14nm = 10^10/1.4 a lot