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

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A high-speed train traveling at 84 kph skids 84 meters before stopping, indicating a constant deceleration. The conversion from kilometers per hour to meters per second results in a speed of 23.33 mps. Using the formula for time, the calculation shows that it takes approximately 3.6 seconds for the train to come to a complete stop. Participants in the discussion emphasize the importance of using correct kinematic equations for accurate results. The conversation highlights the need for careful unit conversion and application of physics principles in such calculations.
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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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