Moving about, velocity, speed, of objects

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Homework Help Overview

The discussion revolves around a physics problem involving the motion of a train and its last carriage. The train moves at a constant speed while the carriage, after being released, comes to a rest after traveling a certain distance. The problem requires understanding concepts of velocity, acceleration, and distance in the context of kinematics.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the need to find the acceleration of the carriage and the time taken to come to rest. There are questions about the disengagement of the carriage and how to determine the distance traveled by the train during this time.

Discussion Status

Some participants have provided insights into the calculations needed for the problem, while others express confusion about the details of the situation, particularly regarding the timing of the carriage's disengagement. There is an indication that one participant has made progress in their understanding and calculations.

Contextual Notes

Participants are navigating the specifics of the problem statement, including the constant speed of the train and the distance traveled by the carriage before coming to rest. There is a lack of clarity regarding the timing of events and the implications of the constant speed of the train.

Chops0
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i have this killllerrr question i need some help on. idno what to do..

Homework Statement


A train is moving at a constant speed of 20ms per second along a striahgt, level track when its last carriage is released. This carriage comes to a rest after continuing for 200m along the track. the speed of the train remains constant.

a.) what was the acceleration of the carriage.
b.) how long did it take for the carriage to come to a rest?
c.) how far ahead of the carriage was the train when the carriage stoped?


Homework Equations


i got the first 2, using v^2 = u^2 + 2ar, and v = u + at

idno how to get the last answer.


The Attempt at a Solution


no idea.
 
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Find the distance traveled by the carriage after it got disengaged from the train. Also find the distance traveled by the train during the same period of time. See what to do next?
 
how do i know when it got disengaged?
cos it just says the carriage got disengaged from a train goin 20msper second :S
 
no wait!
hahah i got it man

thanks bud
what i did was
r = ut + 1/2at^2

because i got the time from part B

turned out to be 200metres ahead :D


thanks man
 

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