1. a) What is the Potential Energy of a 50kg mass at the edge of a roof 110 m above the ground? Take the gravitational PE at the ground level to be zero. b) How much work is done by gravity if it falls a distance of 50m above the ground level. Use g = 10 m/s^2
1. a) What is the Potential Energy of a 50kg mass at the edge of a roof 110 m above the ground? Take the gravitational PE at the ground level to be zero. b) How much work is done by gravity if it falls a distance of 50m above the ground level. Use g = 10 m/s^2
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)...
Related questions
Question
Can you please answer number 1 and all of the sub problems and show all of the steps to the solution
Transcribed Image Text:References
Mailings
Review
Enable Editing
atain viruses. Unless you need to edit, it's safer to stay in Protected View.
Give the physical unit for each physical quantity calculated.
1. a) What is the Potential Energy of a 50kg mass at the edge
of a roof 110 m above the ground? Take the gravitational
PE at the ground level to be zero.
b) How much work is done by gravity if it falls a distance
of 50m above the ground level. Use g = 10 m/s^2
2. A car of mass 1200 kg initially moving at a speed of 8m/s
suddenly changes its speed to 15m/s in 12 seconds.
a) What is the work done?
b) How long did it take for the average Power output to
be P 6,360 W
3. A ball is initially at a height of H above the ground. It
rolls down a frictionless slope with an initial speed of 12m/s.
The final speed of the ball when it is 3m above the ground is
20m/s. Calculate the initial height of the ball when released.
4. Marlene, a 45.4kg girl is running at 3.5m/s on a pier
from the shore towards a lake. At the edge of the pier
she jumps onto a raft in the water. The raft was
originally drifting towards the pier with a drift speed of
v= -1m/s. What is the speed of Marlene and the raft if
ected View
D Focus
W
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Recommended textbooks for you
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON