A 75 T rail car moving at 7.5 mile/hr is coupled to a second stationary rail car. If the velocity of the two cars after coupling is 7.5 ft/s (in the original direction of motion) and the coupling is completed in 7.5 second. What is the average impulsive force on the 75 ton rail car in Ibf?

A 75 T rail car moving at 7.5 mile/hr is coupled to a second stationary rail car. If the velocity of the two cars after coupling is 7.5 ft/s (in the original direction of motion) and the coupling is completed in 7.5 second. What is the average impulsive force on the 75 ton rail car in Ibf?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter9: Momentum And Its Conservation

Section9.1: Impulse And Momentum

Problem 1PP

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USE 4 DECIMAL PLACES ON YOUR FINAL ANSWERS
DO NOT USE SCIENTIFIC NOTATIONS
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A 75 T rail car moving at 7.5 mile/hr is coupled to a second stationary rail car. If the velocity of
the two cars after coupling is 7.5 ft/s (in the original direction of motion) and the coupling is
completed in 7.5 second. What is the average impulsive force on the 75 ton rail car in Ibf?
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