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Visual Worksheet: Potential and Kinetic Energy | Science Class 9 PDF Download

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FAQs on Visual Worksheet: Potential and Kinetic Energy - Science Class 9

1. What is the difference between potential energy and kinetic energy?
Ans.Potential energy is the stored energy in an object due to its position or state, while kinetic energy is the energy of an object in motion. For example, a book on a shelf has potential energy due to its height, while a rolling ball has kinetic energy due to its movement.
2. How can potential energy be converted into kinetic energy?
Ans.Potential energy can be converted into kinetic energy when an object is allowed to move. For instance, when a roller coaster descends from a height, the potential energy it had at the top is transformed into kinetic energy as it speeds down.
3. What are some examples of potential energy in everyday life?
Ans.Some common examples of potential energy include a stretched rubber band, water stored in a dam, and a rock perched on the edge of a cliff. These objects have energy due to their position or arrangement.
4. What factors affect the amount of kinetic energy an object has?
Ans.The amount of kinetic energy an object has depends on its mass and velocity. The formula for kinetic energy is KE = 1/2 mv², where m is the mass and v is the velocity. Thus, an increase in either mass or speed results in higher kinetic energy.
5. How is energy conserved in a closed system involving potential and kinetic energy?
Ans.In a closed system, the total energy remains constant. This means that potential energy can be converted to kinetic energy and vice versa, but the total amount of energy will not change. For example, in a pendulum, as it swings, energy is transferred between potential and kinetic forms but the total energy stays the same.
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