While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 53-kg person develops a power of 77 W during a race, how fast is the person running? (Assume a running step is 1.5 m long.) 5.45 Your response differs from the correct answer by more than 10%. Double check your calculations. m/s Need Help? Read It
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 53-kg person develops a power of 77 W during a race, how fast is the person running? (Assume a running step is 1.5 m long.) 5.45 Your response differs from the correct answer by more than 10%. Double check your calculations. m/s Need Help? Read It
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:### Educational Exercise: Energy Dissipation During Running
**Problem Statement:**
While running, a person dissipates about 0.60 Joules (J) of mechanical energy per step per kilogram of body mass. If a 53-kilogram (kg) person develops a power of 77 Watts (W) during a race, how fast is the person running? (Assume a running step is 1.5 meters (m) long.)
**Student Response:**
Input: **5.45 m/s**
**Feedback:**
❌ **Your response differs from the correct answer by more than 10%. Double check your calculations.**
**Guidance:**
If you need help, you can click "Read It" for additional information and guidance.
---
This exercise involves understanding the concepts of energy dissipation, mechanical energy, power, and their relationships when applied to running. The goal is to calculate the speed of a person based on their power output and energy dissipation during running.
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