A 28000-kg open railroad car, initially coasting at 0.725 m/s with negligible friction, passes under a hopper that dumps 115000 kg of scrap metal into it. a)What is the final speed, in meters per second, of the loaded freight car? b)How much kinetic energy is lost, in joules, when the freight car receives this scrap metal? Ignore the free-fall kinetic energy of the scrap metal.
A 28000-kg open railroad car, initially coasting at 0.725 m/s with negligible friction, passes under a hopper that dumps 115000 kg of scrap metal into it. a)What is the final speed, in meters per second, of the loaded freight car? b)How much kinetic energy is lost, in joules, when the freight car receives this scrap metal? Ignore the free-fall kinetic energy of the scrap metal.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter6: Momentum, Impulse, And Collisions
Section: Chapter Questions
Problem 79AP: A boy of mass mb and his girlfriend of mass mg, both wearing ice skates, face each other at rest...
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A 28000-kg open railroad car, initially coasting at 0.725 m/s with negligible friction, passes under a hopper that dumps 115000 kg of scrap metal into it.
a)What is the final speed, in meters per second, of the loaded freight car?
b)How much kinetic energy is lost, in joules, when the freight car receives this scrap metal? Ignore the free-fall kinetic energy of the scrap metal.
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