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Use work and energy principles to calculate a speed or a height or an energy value. Most problems include little to no little scaffolding. Includes 10 problems.
This collection of problem sets and problems target student ability to use energy principles to analyze a variety of motion scenarios.
On the following pages you will find some problems of work and energy with solutions. Try to do them before looking at the solution. Work and Energy - Work done by a constant force. Work and Energy - Work done by the weight force and potential energy.
If an object of mass 2 kg is thrown up from the ground reaches a height of 5 m and falls back to the Earth (neglect the air resistance). Calculate. a) The work done by gravity when the object reaches 5 m height. b) The work done by gravity when the object comes back to Earth.
In this collection of exercises we will study the concepts of work and energy and see how these quantities manifest themselves and interconnect, including through familiar objects from previous collections such as springs and inclined planes.
1. Which of the following statements are true about work? Include all that apply. Work is a form of energy. A Watt is the standard metric unit of work. Units of work would be equivalent to a Newton times a meter. A kg•m 2 /s 2 would be a unit of work. Work is a time-based quantity; it is dependent upon how fast a force displaces an object.
Questions and model answers on Energy, Work & Power for the Cambridge (CIE) IGCSE Physics syllabus, written by the Physics experts at Save My Exams.
