a.
Momentum of dancer.
a.
Answer to Problem 93A
Momentum of dancer,
Explanation of Solution
Given:
Mass of dancer,
Height,
Formula used:
According to third equation of motion.
Here, v is final velocity, u is initial velocity, a is acceleration and s is distance.
Here, P is momentum, m is mass and v is velocity.
Calculation:
Initial velocity of dancer,
Acceleration due to gravity,
Now, substitute
Now, substitute the value of m and v and solve.
Conclusion:
Therefore, momentum of dancer is
b.
Impulse needed to stop the dancer.
b.
Answer to Problem 93A
Impulse,
Explanation of Solution
Given:
Mass of dancer,
Height,
Formula used:
Impulse of a body is equal to change in momentum.
Here, J is impulse, v is final velocity and u is initial velocity.
Calculation:
From part (a)
Substitute the value of m, v and u and solve.
Conclusion:
Therefore, impulse need to stop the dancer is
c.
Average force exerted on body of dancer.
c.
Answer to Problem 93A
Average force,
Explanation of Solution
Given:
Mass of dancer,
Height,
Time interval,
Formula used:
Impulse of a body is equal to change in momentum.
Here, F is force,
Calculation:
From part (a)
Substitute the value of m, v, u and
Conclusion:
Therefore, average force on body of dancer is 3005.2 N.
d.
Comparison of stopping force and weight of dancer.
d.
Answer to Problem 93A
Stopping force is greater than weight.
Explanation of Solution
Given :
Mass of dancer,
Height,
Time interval,
Formula used :
Here, W is weight, m is mass and g is acceleration due to gravity.
Calculation :
From part (c)
Substitute the value of m, and g and solve.
Conclusion :
Therefore, stopping force is greater than weight of dancer.
Chapter 9 Solutions
Glencoe Physics: Principles and Problems, Student Edition
Additional Science Textbook Solutions
University Physics Volume 2
Lecture- Tutorials for Introductory Astronomy
Physics: Principles with Applications
Conceptual Physics (12th Edition)
Essential University Physics: Volume 2 (3rd Edition)
Sears And Zemansky's University Physics With Modern Physics
- 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