Direction: Answer the puzzle below to recall your knowledge on Work, Power and Energy Work, Power and Energy [10 19 Down 1. friction converts kinetic energy to 4. the net work done on an object is equal to its change in kinetic and potential energy 5. energy that is stored in chemical bonds 7. a roller coaster track is an example of a 8. friction and air resistance is an example of what type of force 9. energy of a moving object 10. the sum of kinetic energy and all fonms of potential energy Across 2. form of energy involved in weighing fruit on a spring energy 3. a stretched rubber band or a stretched or compressed spring are examples of which potential energy 6. a push or pull 11. the sum of an object's potential and kinetic energy 13. work done in a certain amount of time 15. the force that opposes motion between two surfaces that are in contact 17. stored energy 19. states that energy cannot be created nor destroyed, but only transfomed from one form 14. Sl unit of work 12. the gravitation force is called a into another 16. he unit of power equal to one joule of energy transferred in one second 18. the product of the force exerted on an object and the distance the object moves in the 20. the ability to do work direction of the force %3D
Kinematics
A machine is a device that accepts energy in some available form and utilizes it to do a type of work. Energy, work, or power has to be transferred from one mechanical part to another to run a machine. While the transfer of energy between two machine parts, those two parts experience a relative motion with each other. Studying such relative motions is termed kinematics.
Kinetic Energy and Work-Energy Theorem
In physics, work is the product of the net force in direction of the displacement and the magnitude of this displacement or it can also be defined as the energy transfer of an object when it is moved for a distance due to the forces acting on it in the direction of displacement and perpendicular to the displacement which is called the normal force. Energy is the capacity of any object doing work. The SI unit of work is joule and energy is Joule. This principle follows the second law of Newton's law of motion where the net force causes the acceleration of an object. The force of gravity which is downward force and the normal force acting on an object which is perpendicular to the object are equal in magnitude but opposite to the direction, so while determining the net force, these two components cancel out. The net force is the horizontal component of the force and in our explanation, we consider everything as frictionless surface since friction should also be calculated while called the work-energy component of the object. The two most basics of energy classification are potential energy and kinetic energy. There are various kinds of kinetic energy like chemical, mechanical, thermal, nuclear, electrical, radiant energy, and so on. The work is done when there is a change in energy and it mainly depends on the application of force and movement of the object. Let us say how much work is needed to lift a 5kg ball 5m high. Work is mathematically represented as Force ×Displacement. So it will be 5kg times the gravitational constant on earth and the distance moved by the object. Wnet=Fnet times Displacement.
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