Physics

posted by .

A barge with mass 1.7×105 kg is proceeding down river at 6.1 m/s in heavy fog when it collides broadside with a barge heading directly across the river. The second barge has mass 2.83×105 kg and was moving at 4.2 m/s. Immediately after impact, the second barge finds its course deflected by 18° in the downriver direction and its speed increased to 5.0 m/s. The river current was practically zero at the time of the accident. What are the speed and direction of motion of the first barge immediately after the collision? a)Speed?
b)Enter the angle of deflection from the original direction with + as motion to its left and - as to its right.
c)How much kinetic energy is lost in the collision?

  • Physics -

    Use the law of conservation of momentum to solve this. Since that is a vector, do it in both directions (crossways).

  • Physics -

    I used the equation m1vf-m1vi=-m2vf+m2vi and got a velocity of 4.77m/s but that answer is incorrect.
    Am I not using the right formula for question (a)?

  • Physics -

    ok i figured out what I did wrong for the (a). I also found (b). But I cannot seem to get the right answer for the kinetic energy lost in the collision.

  • Physics -

    how do you do part a?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A horse pulls a barge down a canal. The horse pulls on the rope with a force of 7900 N at an angle of 18 degrees to the direction of motion of the barge, which is heading straigt along the canal. The mass of the barge is 9500kg and …
  2. College Physics

    An open barge has the dimensions l=22 m, w=40 m, and h=12m. If the barge is made out of 4.0 cm thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in fresh water without sinking?
  3. physics

    An open barge has the dimensions l=22 m, w=40 m, and h=12m. If the barge is made out of 4.0 cm thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in fresh water without sinking?
  4. physics

    A barge with mass 1.0×105 kg is proceeding down river at 5.8 m/s in heavy fog when it collides broadside with a barge heading directly across the river (see the figure). The second barge has mass 2.58×105 kg and was moving at 4.2 …
  5. Physics

    A barge with mass 1.7×105 kg is proceeding down river at 6.1 m/s in heavy fog when it collides broadside with a barge heading directly across the river. The second barge has mass 2.83×105 kg and was moving at 4.2 m/s. Immediately …
  6. physics

    a garbage barge on the hudson river, measures 25 x 5 x 1 meters & floats in the water. how much deeper does the barge float when 4200 kg of garbage is in it?
  7. Physics - Relative velocity

    A barge is heading directly across a river at35km/h while you are walking on the barge at 4km/h in the same direction as the barge is heading. The current is flowing downstream at 1.4km/h. a) What is your velocity relative to the shore?
  8. physics

    An open barge has the dimensions l=22 m, w=40 m, and h=12m. If the barge is made out of 4.0 cm thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in fresh water without sinking?
  9. physics

    An open barge has the dimensions l=22 m, w=40 m, and h=12m. If the barge is made out of 4.0 cm thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in fresh water without sinking?
  10. physics

    A rectangular barge floats in freshwater. When a 400 kg block is loaded on the 5 m long by 2 m wide barge, the barge sinks a few centimeters deeper. How much deeper does the barge lower?

More Similar Questions