
(a)
The total work done on the stunt woman during the fall.
(a)

Answer to Problem 111P
Thetotal work done on the stunt woman during the fall is
Explanation of Solution
Write the work-energy theorem.
Here,
Write the expression for
Here,
The initial kinetic energy of the woman is zero.
Substitute
Write the expression for
Here,
Put the above equation in equation (II).
Put the above equation in equation (I).
Conclusion:
Given that the mass of the stunt woman is
Substitute
Therefore, the total work done on the stunt woman during the fall is
(b)
Thework done by gravity on the stunt woman.
(b)

Answer to Problem 111P
The work done by gravity on the stunt woman is
Explanation of Solution
The work done by the gravity is the negative of the change in gravitational potential energy of the stunt woman.
Here,
Write the equation for
Here,
Put the above equation in equation (IV).
Conclusion:
Given that the height through which the stunt woman has fallen is
Substitute
Therefore, the work done by gravity on the stunt woman is
(c)
Thework done by air resistance on the stunt woman.
(c)

Answer to Problem 111P
Thework done by air resistance on the stunt woman is
Explanation of Solution
The work is done on the stunt woman by gravity as well as air resistance.
Here,
Rewrite the above equation for
Conclusion:
Substitute
Therefore, the work done by air resistance on the stunt woman is
(d)
The magnitude of the average force of air resistance.
(d)

Answer to Problem 111P
The magnitude of the average force of air resistance is
Explanation of Solution
Take the
Write the above equation for
Here,
Rewrite the above equation for
Conclusion:
Substitute
Therefore, the magnitude of the average force of air resistance is
Want to see more full solutions like this?
Chapter 6 Solutions
Physics
- Make sure to draw a sketch with scale as wellarrow_forwardMake sure to draw a sketch with scalearrow_forwardUltimate Byleth and Little Mac fight. Little Mac, who is a boxer, dashes forward at 26.6 m/s, fist first. Byleth moves in the opposite direction at 3.79 m/s, where they collide with Little Mac’s fist. After the punch Byleth flies backwards at 11.1 m/s. How fast, and in what direction, is Little Mac now moving? Little Mac has a mass of 48.5 kg and Byleth has a mass of 72.0 kg.arrow_forward
- Make sure to draw a sketch with scale as wellarrow_forwardMake sure to draw a sketch with scale pleasearrow_forwardKirby jumps towards his enemy/ally, Meta Knight, at 2.06 m/s while Meta Knight glides in the opposite direction (toward Kirby) at 5.06 m/s. Kirby then begins to inhale, swallowing Meta Knight. What is Kirby/Meta Knight’s velocity immediately after being swallowed? Please put the magnitude of the velocity and then mark direction using dropdown menu. Kirby has a mass of 0.283 kg and Meta Knight has a mass of 0.538 kg.arrow_forward
- No Aiarrow_forwardCan someone help mearrow_forwardNeed help on the following questions on biomechanics. (Please refer to images below)A gymnast weighing 68 kg attempts a handstand using only one arm. He plants his handat an angle resulting in the reaction force shown.A) Find the resultant force (acting on the Center of Mass)B) Find the resultant moment (acting on the Center of Mass)C) Draw the resultant force and moment about the center of mass on the figure below. Will the gymnast rotate, translate, or both? And in which direction?arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON





