Emma52658
Emma52658 Emma52658
  • 03-08-2016
  • Physics
contestada

a railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. the cara lock together. what is their final velocity?
A. 2.0 m/s
B. 0.5 m/s
C. 60,000 kg-m/s
D. 1.0 m/s

Respuesta :

Distasion
Distasion Distasion
  • 03-08-2016
D. It is the same energy but now pushing twice as much, so it would be half as fast so 1 m/s
Answer Link

Otras preguntas

What is the standard form of the equation of a circle that has its center at (-2, -3) and passes through the point (-2, 0)? A. (x + 2)2 + (y + 3)2 = 9 B. (x
The patient ledger is also referred to as
La es una comida típica. a. arroz b. frijoles c. paella
In last year, San Diego basketball team won 32 games, and lost 8 games. What percent of the games were won?
What’s the answer?????
The area of a rectangle is 265.5 m2. If the length is 18 m, what is the perimeter of the rectangle?
In why I see topicality essay Moliere "The Bourgeois Nobleman"?
If one bullet is dropped from a certain height and another is fired from a gun horizontally from the same height which one will hit the ground first or will the
What is the pattern in the values as the exponents increase?
Sorry about the bad quality :(