How long does it take for a high-speed train to come to a complete stop?

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Homework Help Overview

The discussion revolves around a kinematics problem involving a high-speed train that skids to a stop. The original poster presents a scenario where the train travels at 84 kph and skids 84 meters before stopping, seeking to determine the time taken to come to a complete stop under constant deceleration.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the conversion of speed from kilometers per hour to meters per second and explore the application of kinematic equations to find the time of deceleration. Some participants question the accuracy of their calculations and seek clarification on the relevant equations.

Discussion Status

The discussion is ongoing, with participants sharing their attempts and calculations. There is a focus on verifying the correctness of the speed conversion and the application of kinematic principles, but no consensus has been reached regarding the solution.

Contextual Notes

Participants are encouraged to show their calculations and relevant equations, indicating a collaborative effort to clarify the problem setup and assumptions involved in the scenario.

baylayA
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A high speed train traveling at 84 kph locks its wheels and skids 84 meters before coming to a complete stop. If the rate of slowing down is constant, how many seconds will it take for the train to come to a complete stop?
 
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Show your attempts.
State the relevant kinematic equations.
 
i tried converting kph to mps and then seeing how many seconds but the answer was wrong
 
Show your calculations.
 
84 kph = 23.333333 mps

84m/23.33333 mps = 3.6s
 
Write down the kinematic equations.
 

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