# Chapter 5Work in addition to EnergyConcept Check – WorkIs it possible to do work on an obje

## Chapter 5Work in addition to EnergyConcept Check – WorkIs it possible to do work on an obje

Mansour, Ali, Features Editor has reference to this Academic Journal, PHwiki organized this Journal Chapter 5Work in addition to EnergyConcept Check – WorkIs it possible to do work on an object that remains at rest 1. yes2. noConcept Check – WorkIs it possible to do work on an object that remains at rest 1. yes2. noWork requires that a as long as ce acts over a distance. If an object does not move at all, there is no displacement, in addition to there as long as e no work done on that object.Does that mean that no work is being done

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Concept Check  Kinetic EnergyBy what factor does the kinetic energy of a car change when its speed is tripled 1. no change at all 2. factor of 33. factor of 64. factor of 95. factor of 12Since the kinetic energy is 1/2 mv2, if the speed increases by a factor of 3, then the KE will increase by a factor of 9.Concept Check  Kinetic EnergyIs it possible as long as the kinetic energy of an object to be negative1. Yes2. NoConcept Check  Kinetic EnergyIs it possible as long as the kinetic energy of an object to be negative1. Yes2. NoThe kinetic energy is 1/2 mv2. The mass in addition to the velocity squared will always be positive, so KE must always be positive.

Gravitational Potential EnergyPEg = mghgravitational PE = mass free-fall acceleration heightConcept Check  Gravitational Potential EnergyIs it possible as long as the gravitational potential energy of an object to be negative1. Yes2. NoConcept Check  Gravitational Potential EnergyIs it possible as long as the gravitational potential energy of an object to be negative1. Yes2. NoGravitational PE is mgh, where height h is measured relative to some arbitrary reference level where PE = 0. For example, a book on a table has positive PE if the zero reference level is chosen to be the floor. However, if the ceiling is the zero level, then the book has negative PE on the table. It is only differences (or changes) in PE that have any physical meaning.

Wheel in addition to AxleThe efficiency of a squeaky pulley system is — %. The pulleys are used to raise a mass to a certain height. What as long as ce is exerted on the machine if a rope is pulled — m in order to raise a — kg mass a height of — meff dindoutSamplemgFin =

## Mansour, Ali Features Editor

Mansour, Ali is from United States and they belong to 4-Wheel & Off-Road and they are from  Los Angeles, United States got related to this Particular Journal. and Mansour, Ali deal with the subjects like Off-Road Vehicles; Trucks and Sport Utility Vehicles

## Journal Ratings by Rasmussen College-Bloomington

This Particular Journal got reviewed and rated by Rasmussen College-Bloomington and short form of this particular Institution is MN and gave this Journal an Excellent Rating.