---
title: "Measurements made in \\(1910\\) indicate that the common flea is an impressive jumper, given its size. Assume that a flea’s initial speed is \\(2.1 \\, \\text{m/s}\\), and that it leaps at an angle of \\(21^\\circ\\) with respect to the horizontal. The jump lasts \\(0.16 \\, \\text{s}\\)."
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url: "https://nerd-notes.com/ubq/19514/"
date_modified: "2026-08-05T07:15:27+00:00"
---

# Measurements made in \(1910\) indicate that the common flea is an impressive jumper, given its size. Assume that a flea’s initial speed is \(2.1 \, \text{m/s}\), and that it leaps at an angle of \(21^\circ\) with respect to the horizontal. The jump lasts \(0.16 \, \text{s}\).

Measurements made in \(1910\) indicate that the common flea is an impressive jumper, given its size. Assume that a flea’s initial speed is \(2.1 \, \text{m/s}\), and that it leaps at an angle of \(21^\circ\) with respect to the horizontal. The jump lasts \(0.16 \, \text{s}\).

**Part a)** Find the magnitude of the flea’s horizontal displacement. *(2 points)*

**Part b)** Find how high does the flea jump? *(2 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/19514/*