---
title: "Two blocks connected to a compressed spring move right at speed \\( v \\). After releasing the spring, the left block moves left at speed \\( v_2 \\), the right block moves right. What is the center speed of the blocks then?"
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url: "https://nerd-notes.com/ubq/24722/"
date_modified: "2026-04-30T12:39:55+00:00"
---

# Two blocks connected to a compressed spring move right at speed \( v \). After releasing the spring, the left block moves left at speed \( v_2 \), the right block moves right. What is the center speed of the blocks then?

Two blocks connected to a compressed spring move right at speed \( v \). After releasing the spring, the left block moves left at speed \( v_2 \), the right block moves right. What is the center speed of the blocks then?

![Two rectangular blocks of different sizes positioned horizontally on a frictionless surface. Block 1 (on the left) and Block 2 (on the right) are connected by a coiled spring compressed between them. A velocity vector arrow pointing to the right labeled 'v' is shown above the center of mass of the two-block system. Below the blocks, a horizontal dashed line represents the path of motion.](https://nerd-notes.com/wp-content/uploads/ubq-diagrams/nerd-notes-physical-setup-24722-1777552732-g2MmNE.jpg)

- **A.** \( 5v/2 \)
- **B.** \( 3v/2 \)
- **C.** \( v \)
- **D.** \( v/2 \)
- **E.** \( 2v/5 \)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/24722/*