---
title: "A blue ball is thrown upward with a velocity of \\( 9 \\) \\( \\text{m/s} \\) upward from the top of a high cliff. At the same time, a red ball is dropped from the same spot. The red ball is observed to hit the ground below exactly \\( 1 \\) \\( \\text{s} \\) before the blue ball. How high is the cliff?"
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url: "https://nerd-notes.com/ubq/100913/"
date_modified: "2025-09-15T04:19:12+00:00"
---

# A blue ball is thrown upward with a velocity of \( 9 \) \( \text{m/s} \) upward from the top of a high cliff. At the same time, a red ball is dropped from the same spot. The red ball is observed to hit the ground below exactly \( 1 \) \( \text{s} \) before the blue ball. How high is the cliff?

A blue ball is thrown upward with a velocity of \( 9 \) \( \text{m/s} \) upward from the top of a high cliff. At the same time, a red ball is dropped from the same spot. The red ball is observed to hit the ground below exactly \( 1 \) \( \text{s} \) before the blue ball. How high is the cliff?

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/100913/*