Terminal speed and forces question

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Homework Help Overview

The discussion revolves around calculating the terminal speed of a skydiver modeled as a rectangular box. The problem involves understanding the forces acting on the skydiver, specifically the weight and drag force, and how they relate at terminal velocity.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to apply the concepts of force and weight but expresses uncertainty about the next steps. Some participants seek clarification on the specific question being asked, while others provide hints related to the relationship between weight and drag force at terminal velocity.

Discussion Status

The discussion is ongoing, with participants exploring the relationship between forces acting on the skydiver. Helpful guidance has been offered regarding the conditions at terminal speed, but no consensus or resolution has been reached yet.

Contextual Notes

Participants are navigating the implications of drag force and weight, and there may be assumptions about the conditions of the fall that are not fully articulated.

NIZBIT
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A 72.0 kg skydiver can be modeled as a rectangular "box" with dimensions 24.0 cm\times 47.0 cm\times 178 cm.

All I know is drag is a force so F=m*a or d=m*g which is 705.6N. After this I have no idea what to do. Any help?
 
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What is the question about? You are providing a set of values but what is it that the question
really wan?
 
Sorry:

What is his terminal speed if he falls feet first?
 
Clue to get u started.. If the person is at terminal speed, the resultant force will be equals to zero. Therefore, his weight - drag force will be equals to zero. Therefore, weight will be equal to drag force. Then by using the formula for drag force, you will be able to find the terminal velocity of the skydiver.
 
Last edited:

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