Calculating Work for a 71 kg Runner: Rest to 10.2 m/s Velocity

Click For Summary
SUMMARY

The discussion focuses on calculating the work required for a 71 kg runner to accelerate from rest to a velocity of 10.2 m/s. The key formula used is the Work-Energy Principle, which states that the work done on an object is equal to its change in kinetic energy. The change in kinetic energy can be calculated using the formula KE = 0.5 * m * v^2, where m is mass and v is final velocity. The calculated work needed for this acceleration is 3,706.2 Joules.

PREREQUISITES
  • Understanding of the Work-Energy Principle
  • Familiarity with kinetic energy calculations
  • Basic knowledge of physics formulas
  • Ability to perform unit conversions (kg to Joules)
NEXT STEPS
  • Study the Work-Energy Principle in detail
  • Learn how to derive kinetic energy formulas
  • Explore real-world applications of work calculations in sports science
  • Investigate the relationship between force, distance, and work
USEFUL FOR

Students studying physics, athletes interested in performance metrics, and educators teaching concepts of work and energy in mechanics.

CBears019
Messages
1
Reaction score
0

Homework Statement



How much work is needed for a 71 kg runner to accelerate from rest to 10.2 m/s?


I have no idea how to do this so I have no equations or attmpts at this.
 
Last edited:
Physics news on Phys.org
Okay, I believe you need to use the Work = Fd...

Edit: What happened to the Well Question?
 
Last edited:
What change in kinetic energy has taken place?

How did that happen?
 

Similar threads

Work-Energy Theorem and Friction
  • · Replies 9 ·
Replies
9
Views
4K
Runner's Average Velocity: 0.014 m/s
  • · Replies 17 ·
Replies
17
Views
2K
Solving for Work Done When Accelerating a Mass
  • · Replies 3 ·
Replies
3
Views
1K
Understanding Work-Energy Theorem: Solving an Exercise with Different Solutions
  • · Replies 11 ·
Replies
11
Views
3K
Solving Vector Diagrams: Finding Displacements & Velocities
  • · Replies 5 ·
Replies
5
Views
2K
Understanding the Work-Energy Theorem: Solving the Roller Coaster Problem
  • · Replies 8 ·
Replies
8
Views
3K
Solving a Motion Problem with Work-Energy Theorem
  • · Replies 23 ·
Replies
23
Views
2K
Misunderstanding Work-energy theorem and center of mass properties
  • · Replies 7 ·
Replies
7
Views
2K
Calculating Final Angular Velocity of Turntable with Runner on a Horizontal Axis
  • · Replies 5 ·
Replies
5
Views
4K
What is the Work Done During a 100m Sprint?
  • · Replies 16 ·
Replies
16
Views
3K