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Force, Work and Energy Video Lecture | Science for Grade 4
FAQs on Force, Work and Energy Video Lecture - Science for Grade 4
| 1. What is the definition of force? |  |
Ans. Force is a push or pull that can change the state of motion or shape of an object. It is measured in Newtons (N).
| 2. How is work defined in physics? | |
Ans. Work is defined as the transfer of energy that occurs when a force is applied to an object and it moves in the direction of the force. It is measured in joules (J).
| 3. What is the relationship between force and work? | |
Ans. The relationship between force and work is given by the formula: Work = Force x Distance. The amount of work done depends on both the applied force and the distance over which the force is exerted.
| 4. What is the definition of energy? | |
Ans. Energy is the ability to do work or cause a change in an object. It can exist in different forms, such as kinetic energy (energy of motion) and potential energy (stored energy).
| 5. How is energy related to work? | |
Ans. Energy and work are closely related. When work is done on an object, it transfers energy to that object. Similarly, when work is done by an object, it is using its stored energy to perform that work. The work-energy principle states that the work done on an object is equal to the change in its kinetic energy.
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