Question

Two identical freight cars roll toward one another, on a level track with negligible friction.One car...

Two identical freight cars roll toward one another, on a level track with negligible friction.One car is moving at 2.3 m/s and the other car at 2.9 m/s. After the collision, both cars are coupled and roll together with what speed? How much kinetic energy islost in this collision?

***I get 0.3 as my velocity but Im not sure how to calculate how much kinetic energy is lost in this collision

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Kinetic energy lost in collision

Add a comment
Know the answer?
Add Answer to:
Two identical freight cars roll toward one another, on a level track with negligible friction.One car...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • A railroad tank car rolls on a track at 3.45 m/s toward two identical coupled tank...

    A railroad tank car rolls on a track at 3.45 m/s toward two identical coupled tank cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. The first reaches the second two and all couple together. The mass of each is 2.10 ✕ 104 kg. (a) What is the speed (in m/s) of the three coupled cars after the first couples with the other two? (Round your answer to at least two...

  • A 10 ton freight car (call it car A) is moving at 4 m/s collided with...

    A 10 ton freight car (call it car A) is moving at 4 m/s collided with a 30 ton freight car (call it car B), initially at rest. After the collision, they are stuck together. Assume the rolling friction of the cars is negligible please help woth number 6. please show all work and all of the equations used. final momenta? 6. (18 points) A 10 ton freight car (call it car A) moving at 4 m/s collides with a...

  • A railroad freight car, mass 15 000 kg, is allowed to coast along a level track...

    A railroad freight car, mass 15 000 kg, is allowed to coast along a level track at a speed of 3.0 m/s. It collides and couples with a 54 000-kg loaded second car, initially at rest and with brakes released. What percentage of the initial kinetic energy of the 15 000-kg car is preserved in the two-coupled cars after collision? Answer options below. A. 14% B. 18% C. 78% D. 22% E. 38%

  • it. A 24,000 kg freight car is coasting at 0.800 m/s with negligible friction under a...

    it. A 24,000 kg freight car is coasting at 0.800 m/s with negligible friction under a hopper that dumps 150,000 kg of scrap (a) What is the final velocity (in m/s) of the loaded freight car? (Enter the magnitude.) metal into m/s (b) How much kinetic energy (in J) is lost?

  • A 28,000 kg freight car is coasting at 0.650 m/s with negligible friction under a hopper...

    A 28,000 kg freight car is coasting at 0.650 m/s with negligible friction under a hopper that dumps 120,000 kg of scrap metal into it. (a)What is the final velocity (in m/s) of the loaded freight car? (Enter the magnitude.) __________m/s How much kinetic energy (in J) is lost? ___________ J

  • Train cars are coupled together by being bumped into one another. Suppose two loaded cars are...

    Train cars are coupled together by being bumped into one another. Suppose two loaded cars are moving toward one another, the first having a mass of 1.50×105 kg1.50×105kgand a velocity of (0.30 m/s)i^(0.30m/s)i^, and the second having a mass of 2×105 kg2×105kgand a velocity of (−0.12 kg)i^(−0.12kg)i^. What is the energy lost in this inelastic collision? Pick the correct answer A. 0 J B. -7560 J C. -1389 J D. -9720 J E. -52920 J F. None of these are...

  • A railroad car of mass 3.10 ✕ 104 kg moving at 3.40 m/s collides and couples...

    A railroad car of mass 3.10 ✕ 104 kg moving at 3.40 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? (b) How much kinetic energy is lost in the collision?

  • A railroad car of mass 3.15 ✕ 104 kg moving at 2.75 m/s collides and couples...

    A railroad car of mass 3.15 ✕ 104 kg moving at 2.75 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? (b) How much kinetic energy is lost in the collision?

  • A railroad car of mass 1.85e4 kg moving at 3.14 m/s collides and couples with two coupled railroad cars, each of the sa...

    A railroad car of mass 1.85e4 kg moving at 3.14 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.24 m/s. b) How much kinetic energy is lost in the collision? USE THIS DATA: 17400 kg; 3.27 m/s; (help me see how you get the correct answer of 2.39e4 J. 16-4 A railroad car of mass 1.85e4 kg moving at 3.14 m/s collides and...

  • A railroad car of mass 2.95 ✕ 104 kg moving at 3.10 m/s collides and couples...

    A railroad car of mass 2.95 ✕ 104 kg moving at 3.10 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision? J

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT