Verified Document

Work, Energy, And Momentum Work Out The Essay

Related Topics:

Work, Energy, And Momentum Work out the following problems. Be sure to show your work in detail. See the " uploaded file for examples of how the problems should be solved.

A freight elevator has a mass of 3,000 kg, including cargo. The elevator motor raises the load 50 m in 30 s. How much work is done by the motor? What is its power?

W= F*d

F=m*a

W=m*a*d

W= 3000kg *9.8m/s2*50m

W= 1,470,000J

P=W/t

P=1,470,000J/30s

P= 49,000W

What is the KE (in J) of a 2650 lb Honda Civic traveling at 100 mph?

KE=1/2mv2

Conversions from English to metric m=2650lb * 1kg/2.2 lb m=1204.55kg

100 mph * 1 hr/3600 sec * 1609.344 m/mi= 44.7 m/s

KE= 1/2 * 1204.55kg * (44.7m/s2)

If it is thrown vertically with an initial velocity of 50 mph, what is its potential energy change at its highest point? How high does the baseball rise? Neglect air friction.
h=v2/2g

conversion from English to metric

mph *.44704 m/s

1 mph

22.352m/s h= (22.352 m/s) 2/2*9.8m/s2

h=25.49m

PE=Fd; F=ma

PE=m*a* d

PE=145g* 9.8m/s2* 25.49m

PE= 36,221.29J

4. Previously, we calculated the KE of a 2650 lb Honda Civic traveling at 100 mph. What is its momentum?

P=mv

P=2650lb * 1kg/2.2.lb * 100m/h * .44704m/s / 1 mph

P=20.32 kgm/s

5. A 1200 kg Honda Civic traveling at 160 km/hr on the…

Sources used in this document:
References

Nave, C. (2010a). Momentum. Retrieved 2 August, 2010, from http://hyperphysics.phy-astr.gsu.edu/hbase/mom.html#mom

Nave, C. (2010b). Work, energy, and power. Retrieved 2 August 2010 from http://hyperphysics.phy-astr.gsu.edu/hbase/work.html#wep

Zobel E. (2010a). The Physics Department: Mechanics and Energy. retrieved 12 Nov 2010, from http://zonalandeducation.com/mstm/physics/mechanics/energy/energy.html

Zobel E. (2010b). The Physics Department: Mechanics and Momentum. retrieved 12 Nov 2010 from http://zonalandeducation.com/mstm/physics/mechanics/momentum/momentum.html
Cite this Document:
Copy Bibliography Citation

Related Documents

Renewable Energy the United States
Words: 2552 Length: 8 Document Type: Thesis

Part of the problem is governmental intransigence. For the past eight years in particular, energy policy has been driven by the oil companies (Environmental News Service, 2008), resulting in clean energy having been sidelined. Another reason is that there is significant opposition from other parties as well. Business groups have opposed clean energy measures, citing fears about higher energy costs (Dorschner, 2008). These groups have proven powerful enough to

Social Work With Individuals
Words: 1505 Length: 5 Document Type: Essay

Social Work With Individuals Describe the preliminary phase of the counseling work and the beginning (or contracting) phase. As Shulman demonstrates, each phase of the work of counseling requires its own specific skills and techniques, and all phases have their own importance and necessity within the counseling process as a whole. Each phase has a skill set and knowledge base required by the counselor for the success of the work of counseling.

Social What Is Social Work
Words: 1635 Length: 4 Document Type: Assessment

The social worker indentifies and encourages these strengths. In essence, the Strength's Perspective "…builds on the idea that client groups are untapped resources of energy and momentum in their own lives" (The Strengths Perspective). This is an important alternative to the older pathological view of the client. Conclusion In conclusion, as the above discussion shows, answering the question what is social work involves a wide and interrelated range of issues, problems

Why Do Employees Resist Integrating New Technology While Performing...
Words: 3234 Length: 10 Document Type: Term Paper

employees resist integrating new technologies into workplace duties, and what can be done to prevent employee resistance to technology changes? You know, I'm all for progress. It's change I object to." - Mark Twain The Key Question to be addressed: The salient topic of this paper approaches the question of why there is a predictable and often across-the-board degree of resistance from employees when it comes to approaching - and adapting

How Things Work Introductory Physics for Non-Majors
Words: 3623 Length: 10 Document Type: Term Paper

physics of baseball pitches. Physics is all around us even if we don't pay attention to it. There are differences in air pressures, differences in forces and torque that give rise to varied pitches today. Pitching the right way requires a person to be aware of all these proprieties so they make can use of it in the best way. Baseball physics Baseball is one of the most favorite American past

Customer Perception About Adoption Of Solar Energy
Words: 2362 Length: 8 Document Type: Essay

Essay Topic Examples 1. Exploring the Motivational Factors Behind Consumer Interest in Solar Energy:     This essay would delve into the primary motivations driving customers to consider and adopt solar energy. It would explore environmental concerns, economic benefits, and the desire for energy independence as key factors influencing customer perceptions and decisions. 2. The Impact of Government Policies on Customer Adoption of Solar Energy:     An examination of how government incentives, subsidies, and policies

Sign Up for Unlimited Study Help

Our semester plans gives you unlimited, unrestricted access to our entire library of resources —writing tools, guides, example essays, tutorials, class notes, and more.

Get Started Now