---
title: "The front of a \\( 60 \\) \\( \\text{m} \\)-long train is at \\( x = 0 \\) at \\( t = 0 \\). The train has an unknown initial speed and an unknown constant acceleration.  The front of the train reaches a trackside marker located at \\( x = 120 \\) \\( \\text{m} \\) after \\( 8.0 \\) \\( \\text{s} \\). The rear of the train clears the same marker at \\( t = 10.0 \\) \\( \\text{s} \\).  What is the train’s acceleration?"
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url: "https://nerd-notes.com/ubq/114278/"
date_modified: "2026-08-18T02:37:31+00:00"
---

# The front of a \( 60 \) \( \text{m} \)-long train is at \( x = 0 \) at \( t = 0 \). The train has an unknown initial speed and an unknown constant acceleration.

The front of the train reaches a trackside marker located at \( x = 120 \) \( \text{m} \) after \( 8.0 \) \( \text{s} \). The rear of the train clears the same marker at \( t = 10.0 \) \( \text{s} \).

What is the train’s acceleration?

The front of a \( 60 \) \( \text{m} \)-long train is at \( x = 0 \) at \( t = 0 \). The train has an unknown initial speed and an unknown constant acceleration.

The front of the train reaches a trackside marker located at \( x = 120 \) \( \text{m} \) after \( 8.0 \) \( \text{s} \). The rear of the train clears the same marker at \( t = 10.0 \) \( \text{s} \).

What is the train’s acceleration?

- **A.** \( 1.5 \) \( \text{m/s}^2 \)
- **B.** \( 2.0 \) \( \text{m/s}^2 \)
- **C.** \( 2.5 \) \( \text{m/s}^2 \)
- **D.** \( 3.0 \) \( \text{m/s}^2 \)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/114278/*