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Professional Application A 30,000-kg freight car is

Chapter 8, Problem 36

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QUESTION:

Problem 36PE

Professional Application A 30,000-kg freight car is coasting at 0.850 m/s with negligible friction under a hopper that dumps 110,000 kg of scrap metal into it. (a) What is the final velocity of the loaded freight car? (b) How much kinetic energy is lost?

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QUESTION:

Problem 36PE

Professional Application A 30,000-kg freight car is coasting at 0.850 m/s with negligible friction under a hopper that dumps 110,000 kg of scrap metal into it. (a) What is the final velocity of the loaded freight car? (b) How much kinetic energy is lost?

ANSWER:

Solution 36PE

Step 1

In this problem we have to find velocity of the freight car, hence the given are as follows

The mass of car m1=30,000 kg, mass of the metal m2=110,000 kg and mass of the car with load(m1+m2).

Velocity of car loaded v =V, initial velocity of car V1=0.850m/s and initial velocity of metal V2=0

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