---
title: "A girl, standing still, tosses a ball vertically upwards. One second later, she tosses up another ball at the same velocity. The balls collide \\( 0.5 \\) \\( \\text{s} \\) after the second ball is tossed. With what velocity were they tossed? The acceleration due to gravity is \\( 9.8 \\) \\( \\text{m/s}^2 \\)."
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url: "https://nerd-notes.com/ubq/100915/"
date_modified: "2025-09-15T04:13:33+00:00"
---

# A girl, standing still, tosses a ball vertically upwards. One second later, she tosses up another ball at the same velocity. The balls collide \( 0.5 \) \( \text{s} \) after the second ball is tossed. With what velocity were they tossed? The acceleration due to gravity is \( 9.8 \) \( \text{m/s}^2 \).

A girl, standing still, tosses a ball vertically upwards. One second later, she tosses up another ball at the same velocity. The balls collide \( 0.5 \) \( \text{s} \) after the second ball is tossed. With what velocity were they tossed? The acceleration due to gravity is \( 9.8 \) \( \text{m/s}^2 \).

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/100915/*