Find the constant acceleration of the train

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SUMMARY

The discussion focuses on calculating the constant acceleration of a train based on the time it takes for two cars to pass a stationary observer. The lengths of the train cars are 8.60 meters, with the first car passing in 1.50 seconds and the second in 1.10 seconds. The initial velocity (vi) is determined as 5.73 m/s, and the final velocity (vf) is calculated as 7.82 m/s. Using the kinematic equation for constant acceleration, the acceleration (a) is derived as 1.08 m/s².

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  • Understanding of kinematic equations for constant acceleration
  • Basic knowledge of velocity and acceleration concepts
  • Ability to perform calculations involving distance and time
  • Familiarity with the formula a = (vf - vi) / t
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  • Explore real-world applications of kinematic equations in transportation
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Homework Statement


Liz rushes down onto a subway platform to find her train
already departing. She stops and watches the cars go by.
Each car is 8.60 m long. The first moves past her in 1.50 s
and the second in 1.10 s. Find the constant acceleration of
the train.


Homework Equations





The Attempt at a Solution


vi = 8.6/1.5
vf = 8.6/1.1
a = 2(vf - vi)/2.6
?
any advice? I'm confused
 
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You're given distance and time, so what kinematic formula relates those two for constant acceleration?
 

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