JAMB Exam > JAMB Videos > Physics for JAMB > Introduction: Work & Energy - 1
Introduction: Work & Energy - 1 Video Lecture | Physics for JAMB
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FAQs on Introduction: Work & Energy - 1 Video Lecture - Physics for JAMB
| 1. What is work in the context of physics? |  |
Ans. In physics, work is defined as the transfer of energy that occurs when a force is applied to an object and the object is displaced in the direction of the force. It is calculated by multiplying the force applied to an object by the distance the object moves in the direction of the force.
| 2. How is work related to energy? | |
Ans. Work and energy are closely related concepts in physics. When work is done on an object, energy is transferred to that object, either increasing its kinetic energy or potential energy. In other words, work can change the energy of an object or transfer energy from one object to another.
| 3. What are the different forms of energy? | |
Ans. There are several forms of energy, including kinetic energy (energy of motion), potential energy (energy of position or state), thermal energy (heat energy), chemical energy (energy stored in chemical bonds), electrical energy (energy of moving charges), and nuclear energy (energy released from atomic reactions).
| 4. How is mechanical energy related to work and potential energy? | |
Ans. Mechanical energy is the sum of an object's kinetic energy and potential energy. When work is done on an object, it can change the object's potential energy, which in turn affects its mechanical energy. For example, if work is done to lift an object against gravity, its potential energy increases, and consequently, its mechanical energy increases.
| 5. Can you give an example of how work and energy are related in everyday life? | |
Ans. Sure! A common example is using a bicycle. When you pedal the bicycle, you apply a force and do work on the pedals. This work is transferred to the bicycle's wheels, causing them to rotate and move the bicycle forward. The work done on the pedals increases the bicycle's kinetic energy, allowing it to overcome friction and other resistive forces while moving.
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Nov 24, 2024 Last updated |
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