posted by .

A freight car with a mass of 29,000 kg rolls down an inclined track through a vertical distance of 2.8 m. At the bottom of the incline, on a level track, the car collides and couples with an identical freight car that was at rest. What percentage of the initial kinetic energy is lost in the collision?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics, please help check

    A rocket car is traveling on a linear horizontal frictionless track when it suddenly runs out of fuel. The car has achieved a speed of 100 meters per second at the very moment the fuel is completely spent. The track then suddenly changes …
  2. Psychics

    A freight car is moving freely along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stick together and continue to move down the track. What is the magnitude of the final …
  3. physics - rotational motion

    A small car of mass, m, is release at height, h, on a steel track. the car rolls down the track and through the loop of radius, R. at the end of the rack, the car rolls off the track, which is positioned at height, H, above the floor. …
  4. physics

    A toy car rolls at a constant speed down a straight inclined track. When the car reaches the flat surface at the base of the inclined track, the speed of the car decreases.
  5. Physics

    A 200 toy car is placed on a narrow 64--diameter track with wheel grooves that keep the car going in a circle. The 1.5 track is free to turn on a frictionless, vertical axis. The spokes have negligible mass. After the car's switch …
  6. Physics

    In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.1 m/s and collides with an initially stationary, fully loaded boxcar of mass 4.3m. The two cars couple together upon collision. (a) …
  7. Physics

    A 24-ton freight car rolls along a straight track with a speed of 10mph. A 2.0 ton automobile falling vertically lands on the freight car from above. a) what is the speed of the freight car after the car lands on it?
  8. physics

    A locomotive is pulling 17 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (with its load) is 37,000 kg. If the train is accelerating at 0.7 m/s2 on a level track, what is the tension …
  9. Physics

    Four railroad cars, all with the same mass of 11300 kg, sit on a track, as shown in the figure below. A fifth car of identical mass approaches them with a velocity of 19.3 m/s (to the right). This car collides and couples with the …
  10. Physics

    A roller-coaster car rolls down a track, reaching a speed of v0 at the bottom. If the height of the track is increased by a factor of 2.00, assuming the track is frictionless, by what factor will the speed at the bottom increase?

More Similar Questions