Moving train - kinematics problem

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SUMMARY

The discussion focuses on solving a kinematics problem involving a 12 metric ton train that decelerates from a velocity of 72 KMH to rest in 2 minutes. The key equations used are F=ma for force calculation and a=v/t for determining deceleration. The correct approach involves converting units to kilograms, meters per second, and seconds, followed by calculating the deceleration and then applying the force equation. The solution requires a clear understanding of these fundamental physics concepts.

PREREQUISITES
  • Understanding of Newton's Second Law (F=ma)
  • Knowledge of kinematic equations
  • Ability to convert units (metric tons to kilograms, KMH to m/s)
  • Familiarity with basic concepts of acceleration and deceleration
NEXT STEPS
  • Learn how to convert velocities from KMH to m/s accurately
  • Study the concept of constant acceleration in kinematics
  • Explore real-world applications of Newton's Second Law in engineering
  • Practice solving similar kinematics problems involving deceleration
USEFUL FOR

Students studying physics, particularly those focusing on mechanics, as well as educators looking for examples of kinematics problems and solutions.

silvercats
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Homework Statement



A 12 metrick ton train is moving with a 72KMH velocity.when brakes It comes to rest in 2 mins.find the force caused by the force?

Homework Equations


F=ma
a=v/t


The Attempt at a Solution


didn't get the correct answer which is given on the answers page(only the answer not the steps)
 
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The steps are:

1) Transform everything in kg, m/s, s.
2) Find deceleration of train with equation 2 (assuming it is constant)
3) hopefully equation 1 will be all that is needed as your final question could use some work.
 


thank you...
 

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