mechanicle engineering

A train of mass 50,000kg and velocity of 30m/s collides with a stationary carraige of mass 10,000 kg. after the collision,both the train and the carraige moves off together as one body.determine the loss of kinetic energy due to the collision?

  1. 👍 0
  2. 👎 0
  3. 👁 183
  1. momentum is conserved

    50000 * 30 = (50000 + 10000) * v
    ...1500000 = 60000 v ... v = 25

    initial KE ... 1/2 * 50000 * 30^2

    final KE ... 1/2 * 60000 * 25^2

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A train car with mass m1 = 591 kg is moving to the right with a speed of v1 = 7.3 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 4.7 m/s. a. What

    asked by MUHAMMAD JUNAID on March 26, 2019
  2. physics

    Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 160,000 kg and a velocity of 0.300 m/s, and the second having a mass of

    asked by Anonymous on January 12, 2015
  3. science

    A boy and his skateboard have a combined mass of 64 kg. If he is moving with a speed of 3.2 m/s, and collides with a stationary skateboarder whose mass (including his skateboard) is 96 kg, with what speed will the two

    asked by chelsea on February 9, 2013
  4. Physics

    1. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of 0.92 m/s [N71oW] and the second stone moves away at a velocity of 1.25 m/s

    asked by Ryback on January 18, 2016
  5. Physic

    A ball of mass 200g, travelling with a velocity of 100m/s, collides with another ball of mass 800g, moving at 50m/s in thesame direction. If they stick togdther, what will be their common velocity?

    asked by Yakubu Samuel on February 16, 2020
  1. physics

    A railway track travelling along a level at 9 m/s collides with, and becoms coupled to a stationary truck. Find the velocity of the coupled trucks immediately after the collision if the stationary truck has a mass which is : A )

    asked by Nelly on February 23, 2011
  2. science

    A body of mass 20kg moving with a velocity of 8m/s collides with a stationary body of mass 10kg and the two stick together.They then move with a common velocity V.Find the value of V.

    asked by emmanuel on August 26, 2015
  3. Physics

    train car with mass m1 = 521 kg is moving to the right with a speed of v1 = 7.9 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 5.1 m/s. 1)What is

    asked by John on March 1, 2013
  4. pysc

    a locomotive of mass 15000kg traveling at 2.5m/s collides and couples with a set of rail carts of mass 7000kg.calculate: 1.the combined velocity of the train and carts after impact 2.the loss in kinetic energy in the collision

    asked by shristi on March 5, 2011
  5. Physics

    A body of mass 2kg moving with velocity of 5m/s collides with a stationary body of mas 500g. if the two bodies move together after impact. calcalate the magnitude of their common velocity

    asked by Ritanoe on February 11, 2014

You can view more similar questions or ask a new question.